Mass production of printed material. Before the press, each page of a Bible, for example, could take all day to write. After the press it would take a few days to carve the stamp, but then you could print 50 copies of the page in a very short time.
Many people in lands subject to Muslim rule adopted Islam
The Two Houses of Congress. Congress is divided into two chambers, the Senate and the House of Representatives.
The Missouri Compromise was an agreement made to keep the balance of slave and free states equal. Missouri was added as a slave state and Maine added as a free state in 1821.
