- Thomas Jefferson wrote the Declaration of Independence in 1776, declaring the 13 American colonies' independence from Britain and stating that all men are created equal with inalienable rights to life, liberty and the pursuit of happiness.
- The Revolutionary War began in 1775 with battles like Lexington and Concord and continued until 1783, with major help from France. The new nation struggled under the weak Articles of Confederation until drafting the U.S. Constitution.
- The U.S. Constitution was drafted in 1787 to create a stronger federal government, but debates around states' rights and slavery continued into the early 19th century under presidents like Washington, Adams, and Jefferson.