How did the original 13 colonies become part of the united states?
they WERE the united states when they revolted against england
The got the party started.
They defeated England in the revolutionary war( American Revolution)
There was no "United States" before the 13 original colonies. They became the United States, and then more were added over the course of time.
The original colonies BECAME the Original United States by declaring their independence from England. Then they fought the British Army during the revolutionary war.
It started out as property of Great Britain but due to tariffs and dumb laws settlers wanted to secede, so eventually we had a revolutionary war against Great Britain and eventually America won in the battle of Yorktown. I hope this helps:)