Are all blacks considered African

no not all "black" people are called African Americans some of them are called Africans. while others would prefer to be called dark skinned Americans. me as an African American will much rather prefer to be called an dark skinned American because during slavery Europeans also in slaved native Americans so which means many dark skinned Americana are most likely going to be some part European Native American or African because Europeans had babies with the Africans and Native Americans to get more slaves and more money .