Thirteen British colonies joined the Declaration of Independence in 1776, forming the political foundation of the United States commemorated by America’s 250th anniversary.
The colonies stretched along the Atlantic coast of North America, from New Hampshire in the north to Georgia in the south. Although they shared a British imperial connection, they had separate governments, economies, religious communities, and local political traditions.
The Second Continental Congress represented all thirteen colonies when it adopted the Declaration on July 4, 1776. The document declared that these colonies were becoming free and independent states. Their cooperation did not mean they were identical; disagreements over taxation, slavery, religion, and government continued throughout the founding era.
The phrase “Thirteen Colonies” refers specifically to the British colonies that declared independence. It does not include later U.S. territories or colonies acquired after independence. Vermont, for example, was not one of the original thirteen colonies represented in the Declaration.