I'm not there studying that unit with you, but the answers are likely Gothic and Romanesque.
President Richard Nixon is the only president to resign from the office and was the 37th president of the United States, serving from 1969 to 1974. Vice president Gerald R. Ford of Michigan took the office as the new president to complete the remaining 2 1/2 years of Nixon's term.
I think it is number 3 set up a medical system.
I think it might be the cutting back on military spending because of the economy.