From the 16^th century onwards the Europeans began to migrate to North America. The major aim of the migration was to exploit the resources.

By the 18^th century, England had established 13 colonies in the eastern coast of North America. The British treated these colonies as centers for collecting raw materials for their industry and as market for selling their products. People of the colonies protested against the policies and rules of the British, submitted petition to the King of England. They demanded the revocation of the regulation enforced on industry and commerce.

This led to the war between England and the colonies. The second Continental Congress held at Philadelphia in 1775 elected George Washington as the commander-in-chief of the Continental Army. During this time, through the pamphlet titled “common sense”, Thomas Paine declared that it was wise for the Americans to break the ties with Britain. The American Continental Congress issued the famous Declaration of Independence on 4^th July 1776.

The war between En-gland and the colonies in North America that began with the declaration of freedom, ended in 1781. According to the Treaty of Paris in 1783, England ratified the freedom of 13 colonies. The constitution convention held at Philadelphia under the leadership of James Madison, framed the American constitution. Geor-ge Washington became the first president of the United States of America, formed in accordance with the new constitution. Since American War of Independence transformed the system existed there, it is known as American Revolution. It greatly influenced the later history of the world in different ways.