How many states were required to ratify the constitution for it to become the “supreme law of the land”?

What is the connection among sectionalism, slavery, and states’right as causes of the civil war? how did the southern response to the 1860 election results demonstrate this connection

How was the nation of islam different from other civil rights organizations

To encourage railroad companies to build railroads across the west, the government gave them subsidies by select the best answer from the choices provided. a. paying the wages of laborers b. giving them building materials c. providing railroad trains d. providing free land