Because they believed that everything they were put in a tomb with would end up with them in the afterlife, and the more elaborate their tomb, they would live a more luxurious life in the afterlife.
Some would argue the Soviet Union, while others say the US. It depends how you look at the question. There are certain things that prove it was the fault of one while some prove it was the fault of another.
A) True, he won 41.4%
B) True, won 99 out of 261, over John Quincy Adams with 84.
C) True, John Quincy Adams did win the election of 1824, even if he did not win either the electoral vote or popular vote. Fun!
D) True, he was named secretary of state
E) Martin Van Buren was a vice presidential candidate not a presidential candidate.