Which are secondary sources? select three options. documentary about the great depression textbook chapter about economic markets book of historical fiction written about dust bowl refugees letter home written by someone during the great depression signed federal law aiding people affected by the great depression

a agree i agree becuase it is very importnat for example it can tlel you about your past for exmaple   the first culture was the semerians which people are sitll tryignt o uncover there secrets the wall is just anohter treasure that has thousnads of secrets in it to be uncovered

answer; (c) slaves brought to the americans from africa;