Mainly because France and England - later Britain - had been fighting a string of on again off again wars basically since the fall of Rome.
The French saw a good opportunity to give the British a bit of a dressing down after the drubbing they had taken in the previous encounter (Seven Years War) including losing all their American colonies - chunks of modern Canada and various bits and bobs around the Caribbean.
So what better way to stick it to the Brits than support a colonial uprising in the British colonies? This is the same reason the Dutch and the Spanish came in as well.
It worked the American colonies were released and Spain, France and Holland got some other bits and pieces from Britain as well. This of course just set things up for the next round but France had to have a revolution first - however that's another topic.
France hated Brittan and Brittan was already fighting in other parts of Europe so they were weak. When the Americans asked for help, the French saw this as a way to attack Brittan and cause them to lose a war they couldn't afford to lose.
1.They want revenge because they lost the French and Indian war.
2.The American won a tough battle so they went "wow they really want to and have a chance to win".
Because during the American Revolution the Americans were fighting for their freedom from the United Kingdom which was a long term enemy to France.
Britain and France had always fought and the same with Spain. The would jump at the opportunity to defeat there enemy, thus when Benjamen Franklin, Thomas Jefferson, and other prominent Whig figures went over there to ask, they said yes.
the battle at Yorktown
The country that helped America in the American War of Independence is France.
American revolutionaries were aided by France.
i think that the one who persuaded France to enter the American Revolution to be on the American side was James Hancock :)
France. Franklin, Adams , and Jefferson went to France to get their help.
American help in gaining territory in the Caribbean
George Washington
the battle at Yorktown
Benjamin Franklin served as the American ambassador to France during the Revolutionary War.
American help in gaining territory in the Caribbean
Benjamin Franklin was sent to France to apply for assistance in the American colonies' Revolutionary war with Britain .
France
The country that helped America in the American War of Independence is France.
No, it was France.
by sending military supplies
Benjamin Franklin
France