Answer:
During this era, America became more prosperous and saw unprecedented growth in industry and technology. But the Gilded Age had a more sinister side: It was a period where greedy, corrupt industrialists, bankers and politicians enjoyed extraordinary wealth and opulence at the expense of the working class.
California became part of the U.S. September 9, 1850
Answer:
I believe that "a biography of John F. Kennedy" and "a letter written by Thomas Jefferson to the British monarch" go in primary and the other two go in secondary.
Answer:
a. trade with Europe expands
