On the morning of July 11, 1804, two of America's most prominent founders met at the dueling grounds in Weehawken, New Jersey, as the sun rose over the Hudson River. Vice President Aaron Burr raised his pistol and fired. Alexander Hamilton fell, struck in the abdomen, a pistol ball driving toward his spine. He would be carried across the river to New York City and would linger in agony through the following morning — but the shot that ended his life also ended the Federalist era of American politics.

The men who met that morning had been rivals for years, their enmity running deeper than personal dislike. Hamilton, born on the Caribbean island of Nevis around 1755, had risen from poverty to become the architect of America's financial system. As the first Secretary of the Treasury under George Washington — a general for whom Hamilton had served as aide-de-camp during the Revolution — he built the national bank, assumed the states' war debts, and laid the framework for a powerful commercial republic. Burr, born in Newark, New Jersey, in 1756, was his temperamental and ideological opposite: charming where Hamilton was abrasive, pragmatic where Hamilton was doctrinaire, and firmly aligned with the Democratic-Republicans where Hamilton led the Federalists.

Their rivalry crystallized into something lethal during the presidential election of 1800, when Jefferson and Burr tied in the electoral college, throwing the election into the House of Representatives. Hamilton, despite his reservations about Jefferson, viewed Burr as the greater threat to the republic. He reportedly described his opposition to Burr as "a religious duty" and lobbied members of Congress to choose Jefferson. The intervention worked: Jefferson became president, Burr became vice president, and Burr became a political outcast in the administration he was meant to serve.

The final provocation came in 1804, when Burr ran for governor of New York. Hamilton once again deployed his political influence against him. Burr lost the election and held Hamilton personally responsible. On June 27, 1804, Burr sent Hamilton a letter demanding an accounting for statements Hamilton had made about his character. Hamilton's response — acknowledging criticism without offering the full satisfaction Burr sought — was, to Burr, an insult compounded by evasion. A formal challenge followed.

The site chosen for the meeting carried its own grim resonance. The dueling grounds at Weehawken lay across the Hudson in New Jersey, where enforcement of anti-dueling laws was less aggressive than in New York. The location also carried personal weight: it was near the same grounds where Hamilton's own son Philip had been fatally wounded in a duel with George Eacker three years earlier. Whatever Hamilton felt as he stepped onto those grounds, he had already buried a child in their shadow.

At dawn, both men raised their pistols. The precise sequence of what happened next has been debated by historians ever since. What is certain is that Burr's shot struck Hamilton in the abdomen, the ball lodging near his spine. Hamilton's own pistol discharged as he fell — whether intentionally or as the involuntary spasm of a dying man, no one has ever settled with certainty. He was carried back across the river and died the following morning, July 12, 1804.

The condemnation was swift and thunderous. Here was one of the most consequential architects of the republic — co-author of the Federalist Papers, builder of the national financial system, Washington's trusted right hand — killed by the sitting Vice President in what many considered a barbaric throwback to aristocratic honor culture. Aaron Burr was indicted for murder in both New York and New Jersey, though the New Jersey charges were eventually dropped. In an extraordinary spectacle, he returned to Washington and completed his term as Vice President, presiding over the Senate while under indictment for murder.

But the duel destroyed Burr as surely as it killed Hamilton. Federalists who might have embraced him as an enemy of Jefferson recoiled from the man who had shot their great champion. Jeffersonians were wary of someone who had shown such disregard for the norms of political life. Burr drifted west, where an alleged scheme to carve territory from the United States led to his arrest and trial for treason in 1807. He was acquitted, but he never recovered his political standing.

Two men faced each other on the dueling ground at Weehawken on the morning of July 11, 1804, and both were destroyed before the day was out. One by a pistol ball. The other by the reputation that ball left behind.