A, because the Sumerians built it to honor the gods or goddesses (already learned about it in SS)
B. learning to cultivate tobacco, a popular trade item in Europe
The Supreme Court ruled that he was not a U.S. citizen of the United States and therefore could not sue for his freedom in the U.S. court system. This was a famous case that failed to provide a legal route at the time for challenging slavery in the courts.
I believe it was called Pioneer 10 which was an american space probe.