Why was Vietnam divided?

Brainliestttme : describe the following event: increase in islamic extremism in the middle east

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)

How does the existence of a site like catus hill demonstrate the challenge that archaeologist face when making theories?