Which physical feature in the central do United States is made up of flat grasslands and prairies?

How have the changes in china's laws affected its economy?

How did the kansas-nebraska act contradict the missouri compromise?

What was one step that charlemagne took to unite his kingdom? a. he chose a single strong heir to inherit his throne. b. he drove muslim forces out of europe. c. he created and supported schools. d. he declared himself head of the catholic church.