How did the louisiana purchase contribute to the westward expansion?

How does the u.s. constitutional republic compare to authoritarian forms of government

What was the main cause of the russian revolution? a. the protests against the war with poland b. the tremendous war losses of world war 1 c. the protests against the treaty of brest- litovsk d. the losses dictated by the treaty of versailles

When lincoln was first elected president, he hoped to prevent war by allowing (1) in the united states.