Technically he could be considered to be a freedman, because Illinois outlawed slavery. However, the Supreme Court ruled that his time spent in Illinois didn't change the fact that he remained a slave after his master died, so he was not empancipated, and thus was still a slave.
The answer is D: He was a slave.
Pierre de Coubertin is the man you're looking for
Pacific Ocean
The last one
The amount of people in the U.S. depended on the year. So the year is the independent variable.