When was the Declaration of Independence adopted?

The Declaration of Independence was adopted on July 4, 1776. This date is significant because it marks the official announcement of the thirteen American colonies' separation from British rule. The document, primarily authored by Thomas Jefferson, articulated the colonies' reasons for seeking independence and emphasized the ideals of liberty and equality.

While there were previous discussions and drafts leading up to its adoption, it was on that historic day that the Continental Congress formally accepted the Declaration. The date is now celebrated annually as Independence Day in the United States, highlighting its importance not just in American history but in the context of democratic movements worldwide.

The other dates mentioned are associated with different historical events: June 17, 1776, does not have a significant relation to the Declaration; September 17, 1787, marks the signing of the U.S. Constitution; and August 2, 1776, is when some delegates signed the Declaration, but it was already adopted earlier on July 4. Thus, July 4, 1776, is the correct answer, as it represents the moment the nation declared its sovereignty.