Who were the key figures in US democracy before 1820?

Key figures in U.S. democracy before 1820 included George Washington, the first president and a unifying leader; Thomas Jefferson, the principal author of the Declaration of Independence and advocate for individual rights; James Madison, known as the "Father of the Constitution" for his pivotal role in drafting and promoting the U.S. Constitution and the Bill of Rights; and Alexander Hamilton, the first Secretary of the Treasury, who helped establish a strong federal government and economic system. These leaders laid the foundation for democratic governance and the principles of liberty and equality in the early United States.