Possibly the most important man of antiquity, and even all of history, was Julius Caesar. Alexander Hamilton, the famous American patriot, once remarked that "the greatest man who ever lived was Julius Caesar". Such a tribute, coming from one of the Founding Fathers of the quintessential modern democracy in reference to a man who destroyed the Roman Republic, is testament to the enduring mark that Caesar left upon the world. The ultimate conqueror, statesman, dictator, visionary, and opportunist, during his time in power Caesar expanded the borders of Rome to almost twice their previous size, revolutionized the infrastructure of the Roman state, and destroyed the Roman Republic for good, leaving a line of emperors in its place. His legacy is so strong that his name has become, in many languages, synonymous with power: the emperors of Austria and Germany bore the title Kaiser, and the Tsars of Russia also owe the etymology of their title to Caesar. His name also crept further eastward out of Europe, even cropping up in Hindi and Urdu, where the term for "emperor" is Kaisar.
Caesar is still remembered for winning a civil war and helping bring about the end of the Roman Republic, leaving a line of emperors in its place, but it's quite possible that none of what Caesar did would've happened without the template for such actions being set 40 years earlier. At the time, when Caesar was in his teens, war was being waged both on the Italian peninsula and abroad, with domestic politics pitting the conservative, aristocratic optimates against the populist, reformist populares, and this tension ultimately escalated into an all-out war. One of the leading populares was Caesar's uncle, Gaius Marius, a military visionary who had restructured the legions and extended the privileges of land ownership and citizenship to legionaries. Ironically, however, that made legionaries loyal to generals instead of the state, leading to the civil wars.
