The Declaration of Independence represented thirteen British colonies in North America.
Those colonies were New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, North Carolina, South Carolina, and Georgia. Together they formed the political community that declared independence from Great Britain in 1776.
The thirteen colonies were not identical. They differed in geography, economy, religion, government, and social structure, yet their delegates acted through the Second Continental Congress. The phrase “thirteen colonies” is therefore both a geographic description and a statement about the united political action behind independence.
The number also explains the thirteen stripes on the original U.S. flag design. The number of stars later changed as new states joined the Union, but thirteen remains a recurring symbol of the founding era celebrated by America250.