Final answer:
Alexander Hamilton was a key figure in early US history, serving as George Washington's aide-de-camp, playing a crucial role in shaping the country's financial system, and being involved in a fatal duel with Aaron Burr.
Step-by-step explanation:
Alexander Hamilton was a key figure during the early years of the United States. He served as George Washington's aide-de-camp during the American Revolution, was a delegate to the Constitutional Convention, and became the first Secretary of the Treasury under President Washington. Hamilton was known for his strong support of a centralized government and played a crucial role in shaping the country's financial system through his financial plan, which included the assumption of state debts and the creation of a national bank.
Hamilton's career was cut short when he was involved in a fatal duel with Aaron Burr who was angered by Hamilton's support of Thomas Jefferson in the 1800 presidential election. Hamilton was shot and died the following day. His contributions to the establishment of the United States and his financial policies continue to be studied and discussed today.