The Treaty of Paris, which was signed on 3 September 1783 between Great Britain and the United States, is the end point of the War of Independence of the 13 Colonies of the future United States. The greatest importance was the migratory and political effect that in the next 150 years would be noticed in the world. If the United States had not been a free country, not even a country foreign to England, all immigration to America from the European countries would not exist, the United States acted as a desissive power in the Second War, and as a promoter of industrial development, changing the world power of Europe to the new American continent; as well as inspiring revolutions and independence in other colonies.