There has never been an empire in history that did not eventually collapse. The primary cause of this collapse has consistently been the overconfidence born of victory and prosperity. Empires rarely fall when defeated on the battlefield; most begin to unravel when they drown in debt. Victories create the illusion that “no one can stop us now,” and this psychology marks the first step toward decline. As Japanese Admiral Togo—who defeated the Russians in the western Pacific in the early 20th century—remarked:

“The gods do not give the crown of victory to those who grow complacent after a single triumph. Victory is granted to those who train intensively in peacetime, long before war begins. As an old sage said, tighten the bonds of your helmets after victory.”

The empire that expands through a string of early victories initially generates great prosperity. But the complacency and intoxication of power brought on by that prosperity drive leaders into grave strategic mistakes. Critical thinking gives way to praise, realism to dreamy expansionism. As imperial geography outgrows its capacity, vast and indefensible territories, mounting costs, and internal strife emerge. Merit erodes, discipline loosens, and decision-making mechanisms grow blind. As power increases, so do threats, and with expansion comes the formation of counter-coalitions. Friends diminish, interest groups dissolve, but enemies multiply. In the final stage, mismanagement, reckless risks, and avoidable wars weaken the empire. Wars generate enormous costs and the state turns to borrowing. The debt–interest–inflation spiral soon escapes control. Devaluation follows; devaluation breeds more debt. Ultimately, the financial system disintegrates, the currency collapses, and the empire becomes unable to sustain itself. Its downfall becomes inevitable. Thus, collapse does not come from without—it comes from the accumulated weight of internal errors.

The Fall of Empires and Money

As empires expand, they impose their economic order. Goods and services produced in the imperial core circulate throughout colonies, spheres of influence, and dependent regions at substantial profit. Their currency becomes the primary reserve unit of continental—and often global—trade. The decline of this currency parallels the fall of the empire. Although monetary hegemony can never replace military, technological, demographic, or institutional power, it can delay collapse, which rarely occurs suddenly but unfolds over time. The process began with Rome and continued in later empires as their currencies weakened through borrowing, debasement, or excessive issuance of precious metals. While the depreciation of reserve currencies postponed imperial collapse, it could not prevent overexpansion, economic decay, and debt crises. The Roman denarius, the Spanish real, the British pound/sterling, and the U.S. dollar were each global monetary standards of their time. Yet these empires succumbed to overextension, financial exhaustion, the erosion of productive capacity, and internal political-military crises. Their currencies collapsed through three main paths: reduction of precious-metal content (Rome), self-depreciation through oversupply (Spain), and abandonment of the gold standard in favor of fiat money (Britain and the United States). The common outcome was the same: currencies lost real value, inflation surged, imperial costs became unaffordable, and hegemonic order disintegrated.

Debt and the Fall of Rome

As Rome extended its borders, military costs ballooned. Production depended on slave labor, and as state expenses became unsustainable, the silver content of the denarius was systematically reduced, accelerating collapse. The Punic Wars (264–146 BC), though victorious, inflicted permanent fiscal damage due to massive wartime borrowing. The rise of the landed aristocracy further destabilized internal balances. The Gallic Wars (58–50 BC) increased Julius Caesar’s personal power, triggered civil war, and heightened borrowing; Caesar even took “foenus bellicum”—war loans—from wealthy elites. Yet during Caesar’s rule the denarius still retained 95% silver content. The civil war between Caesar and Pompeius weakened the republic, and emergency levies were imposed to pay soldiers. During the Crisis of the Third Century (235–285 CE), Gothic, Persian, Vandal, and Germanic incursions forced Rome into constant mobilization. Emperors borrowed at exorbitant interest from senators and provincial elites; unable to repay, they often settled debts in kind with goods or grain. Fighting on three simultaneous fronts, the denarius collapsed, inflation surged, and the economic system unraveled. By reducing silver content—below 2% in some coins—Rome merely bought time. Hyperinflation exploded, soldiers demanded payment in land and goods, and Rome lost its economic base, split in 395 CE, and finally collapsed in 476.

The Fall of Spain and Debt

The Habsburg-Spanish Empire experienced a brief surge of wealth in the 16th century from massive inflows of New World precious metals. Between 1500 and 1650, Spain controlled roughly 80% of the silver entering Europe. More than 100 tons of gold and 1,800 tons of silver were extracted from Inca and Aztec territories. The Spanish real became the world’s reserve currency. Yet this abundance caused Europe-wide inflation—the “Spanish Price Revolution”—as silver devalued itself. The wealth did not flow into productive sectors; it funded palace luxury and constant warfare. Spain remained dependent on imports and entrenched in rent-seeking. The oversupply of silver destroyed the real’s purchasing power. Endless wars—including the Italian Wars (1494–1559), naval conflicts with the Ottomans, piracy against the British, the Protestant uprisings in Germany and the Netherlands, and colonial expenditures—exhausted the treasury. Spain financed nearly all major wars through foreign borrowing, especially “asiento” loans from Genoese, German, and Dutch bankers. Crushing financial burdens triggered the Dutch Revolt and the Eighty Years’ War (1568–1648). Even the construction of the “Invincible Armada,” destroyed by England in 1588, relied on borrowing. Bankruptcies followed in 1596, 1607, and 1627. The loss of the Netherlands devastated tax revenues. Participation in the Thirty Years’ War (1618–1648) added further debt. The Portuguese War of Independence forced Spain to fight on two fronts, draining colonial income. By the Treaty of Utrecht (1713), Spain and the Habsburgs had lost great-power status.

The Case of the Netherlands

In the 17th century, the Netherlands became the center of world trade, insurance, and finance. The guilder was the global reserve currency, and Amsterdam was the world’s financial hub. But the Anglo–Dutch Wars destroyed merchant fleets, slashed freight revenues, and raised military and insurance costs. To protect their navy, city-states adopted large-scale borrowing. Rising interest rates strained the financial system. The French invasion of 1672 (“The Year of Disaster”) forced the Dutch into crippling land warfare. Successive conflicts disrupted coordination among city-states, rendering the debt burden unsustainable. Although the guilder remained strong, most state revenue was spent on interest payments. The Netherlands’ military-strategic capacity shrank, and England’s industrial rise eclipsed Dutch power. The financial center survived, but the debt–interest spiral ended Dutch leadership.

The Fall of France

France’s collapse exemplifies overextension and uncontrolled war financing. The Italian Wars (1494–1559) and the Thirty Years’ War (1618–1648) entrenched a perpetually expanding war budget. Under Louis XIV (1643–1715), incessant wars dismantled Colbert’s fiscal system; the treasury survived only through borrowing and tax hikes. Support for the American Revolution deepened fiscal crisis; by the 1780s, half of government revenue went to interest payments. The financial system imploded, and printing paper money (assignats) triggered hyperinflation. The Revolution of 1789 and the Napoleonic Wars depleted manpower, production, and credit. Britain, strengthened by the industrial revolution, consolidated economic and financial supremacy. After 1815, France never regained leadership in Europe.

The Ottoman Example

The Ottoman Empire made its gravest strategic errors during periods of excessive confidence. After the rapid victory at Mohács in 1526, the empire was drawn beyond the natural logistical limits of the Balkans into Central Europe—an extremely costly region with harsh winters and distant supply lines. Sustaining these territories required vast annual flows of money, manpower, and logistics. This produced an Ottoman version of Mahan’s overstretch syndrome, steadily wearing down the state’s fiscal and administrative capacity. From the 16th century onward, the devaluation caused by European silver inflows undermined the Ottoman monetary system. The 17th-century triple-front wars against Austria, Iran, and Venice increased financial strain; the timar system collapsed, and the Celali Revolts shattered the production base. After the failed Second Siege of Vienna in 1683, the prolonged wars of the Holy League exhausted the budget. The Treaty of Karlowitz (1699) reduced the tax base. Continuous defeats against Russia in the 18th century entrenched chronic deficits. By the 19th century, the empire could no longer compete industrially; capitulations destroyed its customs regime. The Crimean War (1854) initiated large-scale foreign borrowing. Between 1854 and 1876, more than 15 major loans were issued. Bankruptcy came in 1876, and in 1881 the Ottoman Public Debt Administration (Düyun-u Umumiye) seized fiscal sovereignty.

The Collapse of England and Debt

In the 16th and 17th centuries, England seized roughly 400 tons of silver from Spanish colonies via piracy, forming the seed capital of early British capitalism and maritime empire. However, by the late 17th century, London also needed domestic borrowing. The Bank of England, established in 1694—including Sephardic Jewish bankers—financed the Nine Years’ War against France. Modern British public debt began with £1.2 million in war bonds. The Seven Years’ War (1756–1763), often described as the first global war, doubled British debt and increased colonial tax pressure, triggering the American rebellion in 1773. The American War of Independence (1775–1783) caused major financial loss. In contrast, India—colonized from 1757—generated roughly £10 trillion in value (in today’s terms) until the early 20th century, powering the industrial revolution. The Napoleonic Wars increased national debt eightfold; financiers such as Rothschild and Baring bankers played decisive roles. After the 1815 Waterloo victory, it took nearly a century to repay wartime debts. Despite this burden, Britain established “Pax Britannica” after the 1805 Trafalgar victory, controlling global sea lanes and dictating free trade. London turned industrial supremacy into a global trade network, and sterling—pegged to gold—became the anchor of international finance. Yet Britain’s global limits became visible in the Boer Wars (1899–1902). The rise of Germany produced existential pressure, culminating in World War I and World War II. Britain borrowed $4 billion from American bankers, notably JP Morgan, during WWI, undermining sterling’s supremacy. Gold reserves were depleted by the costs of two world wars; unable to maintain the gold peg, Britain abandoned the gold standard in 1931. After WWII, the pound suffered its most severe collapse due to debt, shrinking exports, and lost imperial revenue. The 1947 attempt to restore convertibility failed, draining $3 billion of reserves in six weeks. In 1949, sterling was devalued by 30%. This marked both monetary and geopolitical decline. Britain ceded financial leadership to the United States; the sterling area lost its global reserve-currency role.

The Rise of the U.S. Dollar

By 1890, the United States surpassed Britain in industrial output, becoming the world’s largest manufacturer and laying the groundwork for the dollar’s global ascendance. Steel, oil, railroads, and mass production transformed the U.S. into a capital-exporting power. During World War I, the U.S. became Europe’s creditor and accumulated massive gold reserves. By the 1920s, New York rivaled London as a financial center; by the 1940s, the U.S. held two-thirds of global gold stocks. This dominance was institutionalized at Bretton Woods at the end of World War II, where the dollar became the backbone of the new international monetary system.

The Bretton Woods System

In July 1944, representatives of 44 countries met in Bretton Woods, New Hampshire, to design the post-war economic order. With overwhelming economic superiority, the U.S. established a dollar-centered system in which the dollar was pegged to gold and other currencies were pegged to the dollar. One ounce of gold was fixed at $35. The conference created two pillars of global finance: the IMF for short-term balance-of-payments support and the World Bank for long-term reconstruction and development. Bretton Woods institutionalized both the dollar-centered monetary system and the U.S.-led liberal economic order.

The Collapse of Bretton Woods

By the late 1950s, the United States was printing more dollars than its gold reserves could support to finance the Vietnam War, Cold War commitments, Marshall aid, and growing social expenditures. Excess dollar issuance weakened confidence in U.S. gold backing. Europe and Japan had recovered by the 1960s, U.S. industrial dominance had eroded, and surplus dollars accumulated abroad. The U.S. could no longer simultaneously supply global liquidity and maintain trust in its gold parity. When countries—led by France—began demanding gold in exchange for dollars, the system faltered. In 1971, President Nixon closed the gold window, ending the 35$/ounce convertibility and effectively terminating Bretton Woods. The dollar entered the era of unlimited fiat expansion, now backed not by gold but by military power and the emerging petrodollar system.

The Petrodollar System

After 1971, the U.S. gained the ability to print unlimited money without gold reserves. The petrodollar system emerged after the 1973 oil crisis through a strategic agreement with Saudi Arabia: oil exports would be priced exclusively in dollars, and oil exporters would reinvest surpluses into U.S. financial markets. Oil replaced gold as the anchor of global dollar demand. This arrangement enabled the U.S. to attract unlimited external financing, run massive deficits, and borrow at low interest rates. In turn, it financed the Pentagon’s global presence—carrier strike groups, a network of 800+ bases, nuclear modernization, and post–Cold War unipolar dominance. The Carter Doctrine (January 23, 1980) declared any threat to Persian Gulf oil routes a direct threat to U.S. vital interests, mandating military response. Under Reagan, this evolved into aggressive containment and energy-route protection. Tanker War interventions, Gulf convoys, and regional alliances defended the petrodollar. The Bush Doctrine launched the first large-scale war (1991 Gulf War) to protect the petroleum order. U.S. support for Israel after 1973 further militarized the region. After 9/11, preventive-war doctrine legitimized regime change against states threatening Israeli geopolitics and U.S. energy or monetary architecture. Iraq’s 2000 shift to euro-based oil sales was treated as a red alert. The 2003 Iraq War, 2011 Libya intervention, and post-2013 Syria policies were all linked to maintaining the petrodollar and advancing Israeli geopolitical aims. The fundamental lesson: the petrodollar is the liquidity engine that finances U.S. global military power. As long as energy flows through dollar channels, American hegemony is secure; when de-dollarization begins, hegemony cracks.

The Dollar Begins to Lose Its Throne

In recent years, global efforts—especially among BRICS and emerging economies—to trade in national currencies have expanded. BRICS intra-trade now exceeds 65% in local currencies, reducing the dollar’s share to roughly one-third. Analysts predict the dollar’s dominance in reserves and invoicing may fall from around 90% to 40–45%. The dollar, severed from gold since 1971, now faces competition from rising blocs, new payment systems, and energy trades increasingly conducted outside the dollar. Its status as the sole global currency is steadily eroding.

Conclusion

History teaches one lesson: debt is indispensable to every empire, yet it behaves like cancer. Rome began to collapse the day it lost its silver denarius. Spain’s decline began when silver abundance rendered the real worthless. The Netherlands and France fell when trapped in the interest-rate spiral. The Ottomans suffocated under debasement and foreign debt. Today, similar economic entropy is visible in the American Empire. With over $36 trillion in public debt, nearly $100 trillion in total debt, and perpetual trillion-dollar deficits, Washington has created a financial colossus unable to bear its own weight. Worse still, the global consent that sustained the dollar’s historical privilege is dissolving. The rise of national-currency trade within BRICS, Asian payment systems, de-dollarized energy markets, shifts in reserve composition, and the Global South’s search for financial autonomy have eroded the foundation of U.S. hegemony. As the petrodollar order trembles, so does the invisible liquidity engine powering American military dominance. Washington now generates debt rather than hegemony. Confidence in the dollar is fading. As with Rome, Spain, the Netherlands, France, and the Ottoman Empire, the greatest threat to the United States is not external rivals but its own debt–interest–inflation wreckage. The inescapable truth remains: when money collapses, so does the empire. As the dollar’s throne shakes today, the world increasingly hears the footsteps of an Asia-centered multipolar future.

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This article was originally published on Mavi Vatan.

Ret Admiral Cem Gürdeniz, Writer, Geopolitical Expert, Theorist and creator of the Turkish Bluehomeland (Mavi Vatan) doctrine. He served as the Chief of Strategy Department and then the head of Plans and Policy Division in Turkish Naval Forces Headquarters. As his combat duties, he has served as the commander of Amphibious Ships Group and Mine Fleet between 2007 and 2009. He retired in 2012. He established Hamit Naci Blue Homeland Foundation in 2021. He has published numerous books on geopolitics, maritime strategy, maritime history and maritime culture. He is also a honorary member of ATASAM. 

He is a Research Associate of the Centre for Research on Globalization (CRG).

Featured image is from the author

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