What is Independence Day celebrated for?

Independence Day, celebrated on July 4th, marks the adoption of the Declaration of Independence in 1776. This document was significant as it formally declared the thirteen American colonies' intent to separate from British rule and established the foundational principles of freedom and democracy that would guide the newly formed nation. The adoption of the Declaration is a key moment in U.S. history, symbolizing the colonists' desire for self-governance and their commitment to individual liberties.

The other options denote important historical events but are not related to Independence Day. For instance, the signing of the U.S. Constitution occurred several years later, in 1787, establishing the framework of the U.S. government. The end of the Civil War was a pivotal moment in American history but took place in 1865, while the conclusion of World War II happened much later, in 1945. None of these events are linked to the celebration observed on July 4th, which instead honors the foundational act of declaring independence from British rule.