The Louisiana Purchase occurred under whose administration?

The anti-immigrant (nativist) movement of the pre-Civil War era was motivated by Americans’ fear and distrust of what religion?

What do the Aroostook War (aka the Ham and Eggs War) and the Pig War have in common?

what was the Ostend Manifesto?

If England and France needed cotton from the south to keep their textile mills in business, why did they fail to recognize the CSA as a sovereign nation?

When American troops captured Santa Fe during the Mexican War, what prevented them from moving south to carry the fight deeper into Mexico?

Why did the Mormons leave the United States and move to Utah, then part of Mexico, in 1846?

How was the American Civil War a “modern” war?

With what country did the USA share administration of the Oregon Territory until the 1840s?

What was the name of the fort in Charleston Harbor that the Confederates attacked on 12 April 1860 to begin the American Civil War?