The us senate has approved approximately how many treaties?

Describe how gravity and convection work together to move the plates in the plate tectonics theory

How do direct democracry and representative democary differ

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.