How did steamships transform immigration?

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

federal power is further limited with a system of checks and balances that gives each branch of government a measure of power over the others.

explanation:

c holding free elections

c is the correct answer for this question.