Are there any blacks in America?

Descendants of African slaves brought to the United States by European colonists in history. Also known as "African Americans". Belong to the black race. There are 700 people in 1680, 90,000 people in 1730, 1800,1850,3 million, 1970,8 million,1970. General English. Mainly believe in Christianity and Catholicism; Some people believe in Judaism and Islam. African Americans have played an important role in the history of their country. They actively participated in the American War of Independence and the Anti-Fascist War and made great achievements. They have also made great contributions to the development of American economy and culture and have always been the main force of American agriculture; Black workers in the steel industry account for about one third, and the automobile industry accounts for about half; In music, literature and sports, the achievements of blacks are more remarkable.