When did the United States gain independence?

The United States gained independence in 1776, marking a significant turning point in American history. This year is noteworthy because it is when the Declaration of Independence was adopted on July 4th, formally asserting the colonies' break from British rule. The Declaration, primarily authored by Thomas Jefferson, articulated the colonies' grievances against King George III and laid out the philosophical foundation for self-governance and the principles of liberty and equality.

The other years listed do not correspond to the events surrounding the establishment of American independence. For instance, 1801 marks the beginning of Thomas Jefferson's presidency, which was a time of significant political developments but not independence. The year 1492 is primarily known for Christopher Columbus's voyage to the Americas, which marked the beginning of European exploration and colonization of the continent rather than independence. Finally, 1620 is associated with the arrival of the Pilgrims on the Mayflower and the establishment of the Plymouth Colony, well before the desire for independence from British governance arose.