What is the American Revolution?

The American Revolution was the political upheaval during the last half of the 18th century in which thirteen colonies in North America joined together to break free of the British Empire, combining to become the United States of America. They first rejected the authority of the Parliament of Great Britain to govern them from overseas without representation, and then expelled all royal officers. By 1774, each colony had established a Provincial Congress, or an equivalent governmental institution, to form individual self-governing states. Through representatives sent in 1775 to the Second Continental Congress, they joined together at first to defend their respective self-governance and manage the armed conflict against the British known as the American Revolutionary War.

In other words, and to make it easy to understand, the Colonists were sick of the British Parliament because they were levying taxes on them, and trying to impose themselves over them when they had no representation on the Parliament (Taxation without Representation). They started to boycott many of the British activities and after a lot of problems, they managed to kick the British out of their lives, leading in to what we call the American Revolution.