What significant event occurred in 1776 in American history?

The Declaration of Independence, adopted in 1776, marked a pivotal moment in American history as it formally announced the thirteen American colonies' intention to separate from British rule. This document articulated the colonies' grievances against King George III and laid out the philosophical foundation for their quest for independence, emphasizing principles such as the rights to life, liberty, and the pursuit of happiness. The Declaration served not only as a statement of purpose for the revolutionaries but also as a profound assertion of the idea of self-governance, inspiring future democratic movements both in the United States and around the world.

The other options represent significant events but occurred at different times in American history. The drafting of the Constitution followed the Declaration, occurring in 1787, while the ratification of the Bill of Rights took place in 1791. The establishment of the First Congress also happened after the Declaration, starting in 1789. Therefore, the Declaration of Independence remains the most notable event from 1776, as it was the catalyst for the formation of a new nation.