He killed 10 million Africans through forced labor.
The Kansas-Nebraska Act was passed by the U.S. Congress on May 30, 1854. It allowed people in the territories ofKansas and Nebraska to decide for themselves whether or not to allow slavery within their borders. The Actserved to repeal the Missouri Compromise of 1820 which prohibited slavery north of latitude 36°30´.
The correct answer is <span>A. Porter is writing social history because he is focusing on lives of large numbers of ordinary people.</span>
