Hamilton emphasized strong central government and successfully argued that the implied powers of the Constitution provided the legal authority to fund the national debt. In the early 19th century, Hamilton conducted legal and business activities in New York City, and was active in ending the international slave trade. He was killed during a duel with Vice President Aaron Burr, after the latter took umbrage at Hamilton's campaigning against him in the New York gubernatorial election.Engraving: Bureau of Engraving and Printing; restoration: Andrew Shiva