The American Revolutionary War was a war that took place between 1775 and 1783. The ethnic background of this war was very complex, involving soldiers and leaders from different ethnic, cultural, and religious backgrounds. At the beginning of the war, the American army was mainly made up of immigrants from England and Scots. Most of the soldiers were Roman and Anglo-Saxon. However, as the war progressed, the American army began to absorb more and more immigrants and local residents, including soldiers and leaders from different provinces and races. For example, during the American Revolutionary War, Washington was one of the founding fathers of the United States. He was a Scottish immigrants from the Concord family. In addition, other famous leaders of the American Revolutionary War included Thomas Jefferson, Robert E. Lee, John Adams, and others. They came from different ethnic and cultural backgrounds, including immigrants and locals from England, Iceland, Scottish, Canada, Australia, and other places. The ethnic background of the American Revolutionary War reflected the multiculturalism and variety in American history, as well as the conflicts and cooperation between different ethnic groups in American society. This war was one of the most significant events in American history. It not only led to the independence of the United States, but also promoted the transformation and development of American society and culture.