New farming techniques and a severe created conditions for the Dust Bowl
A)
machinery issues
B)
growing conditions
C)
drought

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

In 1819, what did the united states obtain from spain for $5 million?

Define the word imperialism. what is your opinion: should the u.s. engage in imperialism? under what circumstances? offer a brief, effective argument against the opinion that you hold.