During what period did Harding, Coolidge, and Hoover serve as
president?
A. Progressive Era
B. The Roaring 20's
C. World War I
D. World War II

Which statement describes the primary purpose of the european union? question 1 options: to protect european nations in the event of another world war to work together to strengthen europe and benefit all member nations to prevent alliances from forming between member nations to share resources and make economic trade easier between coal and steel companies