South Carolina based its right to secede on-

states rights

the Compromise of 1850

the Dred Scott case

popular sovereignty

What made it important for Maya mathematicians and astronomers to work in unison?

How did conductors of the Underground Railroad coordinate efforts with one another from region to region?

What was one result of the rapid growth of U. S. cities in the early

11. What are some factors that affect how the theory of comparative advantage works in the real world?

Which was true of the Boxer Rebellion?

Why did the Germans stop using the firing squad

There are two ways to amend the U. S. Constitution. The first begins in Congress and requires A. a two-thirds vote of both the House and Senate. B. a four-fifths vote of both the House and the Senate. C.

Did the Romans get their wool from Spain or from Italy?

How did the Adams-Onis Treaty limit the Spanish claim on territory?

Who was the virginian who spoke against the english