How did the Union blockade of the southern coast affect the Confederacy? It forced the Confederacy to build new railroads.
It contributed to shortages of weapons and food.
It encouraged Europe to trade with the South.
It halted all trade, leaving the South without supplies.

How did the spanish-american war affect american expansionism? a.) america took control of hawaii, cuba, and the pacific islands of guam. b.) america took possession of cuba and the philippines. c.) america gained control of puerto rico and hawaii. d.) america gained control of cuba, puerto rico, the pacific island of guam and the philippines.