The American War of Independence (1775- 1783) ended the British colonial rule over the North American people, realized national independence, established a democratic system, and promoted the Latin American and French revolutions.

Britain reaffirmed the independence of the United States through the Second American War of Independence (1812-1815), which can also be regarded as the American people fighting for freedom.

The civil war (186 1 year-1865) was fought by the United States of America in the north and by the United States of America in the south. The war ended in a union victory. At the beginning of the war, it was originally a war to safeguard national unity, and later it evolved into a revolutionary war to fight for the freedom and new life of slaves.