31) How did U. S. participation in World War I contribute to its emergence as a world power in the early 20th century?

Select all the correct answers.

A) The U. S. enjoyed a period of economic prosperity after the war.
B) The U. S. mobilized a large army and navy to help the Allies achieve victory.
C) The U. S. weakened the Allied countries by making France, England and Russia reduce the size of their
armies.
D) The U. S. mobilized a large army and navy to help the Allies achieve victory.