After the Soviet Union lost twenty million soldiers in WW2, Stalin wanted to make buffer zones around friendly states so they would never be invaded again.
The west offered new settelers free land
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.