History study reference

Empires rise for remarkably similar reasons across history, and they tend to fall for reasons that are the mirror image of their rise — which suggests the two questions are really one question asked twice.

Rome rose because it solved a problem most ancient states couldn't: how to absorb conquered peoples without them wanting to leave. Citizenship, roads, and a legal system that worked the same in Gaul as in Syria turned conquest into integration. The Mongol Empire, under the Borjigin dynasty founded by Genghis Khan, rose even faster, for a different reason: a genuinely superior military system (mounted archers, decimal-based army organisation, ruthless meritocracy among commanders) that simply outfought every settled civilisation it met, from China's Song dynasty to the Abbasid Caliphate in Baghdad.

But both empires fell in ways that trace directly back to what made them succeed. Rome's citizenship model, so effective at integration, eventually meant the empire had no strong sense of a single “Roman” identity to defend when the crisis came in the fifth century — the western half simply stopped being worth holding together. The Mongol Empire's strength was speed and terror in conquest, not a system for governing what it had conquered; within a century of Genghis Khan's death it had already split into four fractious khanates, each absorbed into the cultures it ruled (the Yuan dynasty in China is Mongol in name only by its later years).

A sceptic might argue this is too tidy — that some empires fall for reasons that have nothing to do with how they rose, like the Black Death or a lost war. That's fair, and worth conceding: the Ottoman Empire, under the House of Osman, didn't collapse because its founding strengths turned to weaknesses so much as because it fell behind industrially while Britain and Germany raced ahead in the nineteenth century. External shocks matter.

Still, the strongest pattern holds across most cases, and it's visible with unusual clarity in the twelve years between 1912 and 1924, when four dynastic empires collapsed in quick succession — the Qing in China, the Romanovs in Russia, the Habsburgs in Austria-Hungary, and finally the Osmans in Turkey. Each fell for a locally specific reason, but each also fell because the system of rule that had built the empire (absolute monarchy, multi-ethnic dynastic loyalty) had become exactly what a modernising, nationalist twentieth century could no longer accept. Empires, in the end, tend to be undone by the very logic that built them.

Napoleon Bonaparte is the case usually made for the power of the individual, and it's a strong one: a single Corsican artillery officer took control of a chaotic post-revolutionary France, redrew the map of Europe, and left a legal code still in use today. It's hard to imagine anyone else achieving exactly that.

But look closer at why Napoleon was able to do it, and the “great individual” argument starts to weaken. France in 1799 was exhausted by a decade of revolutionary chaos and desperate for order — a set of conditions Napoleon didn't create, he simply arrived into. The revolutionary armies he commanded were already unusually large and motivated because the Revolution had introduced mass conscription and a genuinely new sense of national purpose. Napoleon was an extraordinarily skilled general, but he was skilled at exploiting forces that were already in motion, not at creating them from nothing.

The same pattern appears with Adolf Hitler a century later. Hitler's rise is often told as a story of one man's will, but the Weimar Republic he took over had already been broken by the 1929 Depression, mass unemployment, and a national resentment over the Treaty of Versailles that long predated him. Other extremist leaders across Europe tried to exploit similar conditions in the 1930s and mostly failed — which suggests individual skill did matter, but only as the thing that turned an available opportunity into an actual seizure of power.

This points to a more useful way of framing the debate than a straight either/or: individuals matter most at moments when larger forces have already created an opening, and the historically significant individual is usually the one who recognises and exploits that opening fastest and most ruthlessly, not the one who invents a crisis from a stable situation. Alexander the Great inherited from his father Philip II an already-formidable Macedonian army and a Greek world already weakened by decades of infighting between city-states; his genius was in what he did with that inheritance, at extraordinary speed, not in creating the conditions for it.

So the honest answer is neither pole of the question. Larger forces set the boundaries of what's possible in a given moment; individuals decide, within those boundaries, how dramatically and how quickly the possible becomes real. History remembers the individual because their name is easier to attach to an outcome than “a Depression” or “a fractured city-state system” — but the forces did at least half the work.

It depends entirely on what “succeed” is taken to mean, and answering that question honestly is really the whole essay.

If success means simply overthrowing the existing government, revolutions succeed more often than people assume: the American Revolution removed British rule, the French Revolution ended the Bourbon monarchy under Louis XVI, and the Russian Revolution of 1917 ended three centuries of Romanov rule. In that narrow sense, revolutions are usually at least partially effective — governments rarely survive a determined, widely-supported uprising.

But if success means achieving the freer, fairer society the revolutionaries actually wanted, the record looks far worse. The French Revolution, which began with the ideals of liberty and equality, ended within a decade in the Terror and then in Napoleon crowning himself Emperor — arguably a more centralised form of power than the one it replaced. The Russian Revolution replaced the Romanov autocracy with Stalin's dictatorship, which by most measures inflicted greater suffering on ordinary Russians than the Tsar had. The revolutions of 1848 across Europe are the clearest failures of all: uprisings broke out in France, the German states, the Austrian Empire, and Italy within months of each other, nearly all inspired by similar liberal and nationalist ideals, and nearly all were crushed or reversed within two years, leaving the old monarchies more determined than ever to resist reform.

The American Revolution is the best counter-example, and it's worth taking seriously rather than dismissing: it did produce a lasting constitutional system rather than a new tyranny. What's notable is what made it different — a revolutionary leadership (Washington among them) that was unusually willing to hand back power rather than seize more of it, and a society with existing institutions of self-government (colonial assemblies) to build on rather than starting from nothing, unlike France or Russia.

That comparison suggests the real answer: revolutions succeed at destruction reliably and succeed at construction rarely, and the difference tends to come down to whether the revolutionaries have something specific to build with — existing institutions, a leadership willing to limit its own power — rather than only a grievance to act on. Revolutions are, in that sense, more likely to fail than succeed, precisely because tearing down a government is a far easier task than building a stable one to replace it.