Help me it's due today pls

What was the first civilization name of the indians?

Which of the following descriptions is an example of the curtual diffusion

Which of the following encouraged westward expansion? a.the government decreased the price of federal land. b.each of these represents actions taken to encourage westward expansion. c.the government decreased the price of federal land d.the second national bank lowered the cost of borrowing money (reduced interest rates)