There was a rift between the American colonies and Britain. The expansion of the colonies made them consciously persecuted in Britain, and they had the idea of independence.

1774, representatives from 12 states gathered in Philadelphia to hold the so-called first continental congress, hoping to find a reasonable way to solve the problem peacefully with Britain.

1775, war broke out in Massachusetts. In May, the second continental congress was held, which strengthened the determination of war and independence and drafted the famous Declaration of Independence. This is also the final winning factor.

1On July 4th, 776, George Washington issued the Declaration of Independence, declaring that the United States was independent and completely separated from Britain, in order to "seek survival, freedom and happiness" and realize the ideal of the Enlightenment.

178 1 year, the us military won a decisive victory.

1783, the United States and Britain signed the Treaty of Paris, ending the War of Independence.

The success of the revolution gave the American people the opportunity to express their political ideas in the form of legislation. ?

1787, a federal conference was held in Philadelphia, and Washington was promoted to chairman. They adopted the principle that the central power is general, but it must be carefully defined and explained. In addition, in order to prevent excessive central power, three departments of equal cooperation and mutual checks and balances have been set up in the government, namely, legislative, administrative and judicial powers, which are coordinated and balanced with each other, so that no power occupies a controlling position.