Which of the following factors was key to the information of the first civilization in the nile valley

Brainliestttme : ) -what reforms were made in communist china?

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)

What is the main idea of this excerpt