John Adams was the second President of the United States, serving from 1797 to 1801. He played a key role in the American Revolution, serving as a diplomat in Europe and negotiating the Treaty of Paris that ended the war. As president, he faced challenges such as tensions with France and the Alien and Sedition Acts, which limited freedom of speech and the press. Adams also signed the Treaty of Tripoli, which declared that the United States was not a Christian nation. He was a Federalist and believed in a strong central government. Adams died on July 4, 1826, the same day as his longtime political rival, Thomas Jefferson.