Which event led to the rivalry between Aaron Burr and Alexander Hamilton?

The event that primarily led to the rivalry between Aaron Burr and Alexander Hamilton was not the American Revolution, but their political disagreements. Their animosity grew out of sharp contrasts in their political ideologies and ambitions, particularly during the early years of the United States.

Hamilton, a Federalist, favored a strong central government and policies that would strengthen the nation’s financial system. On the other hand, Burr, who was affiliated with the Democratic-Republicans at times, was a proponent of more decentralized governmental power and more agrarian interests. Their rivalry intensified during political campaigns and elections when their opposing views led to clashes, particularly in the presidential election of 1800 when Burr and Thomas Jefferson faced off against Hamilton's supporters.

Ultimately, the culmination of their conflicts resulted in the infamous duel in 1804, but it was the foundation of their political disagreements that initially set the stage for their rivalry, leading to the events that transpired, including the duel.