The Nile extends another 3,600 miles south of its first cataract. What geographic features might have limited the expansion of civilization beyond the Nile Valley?

The factory system of the early-19th century caused a) a decrease in farm production. b) an increase in rural population. c) an increase in urban population. d) high unemployment in other areas.

Why did louis xvi call a meeting of the estates-general in 1789? how long had it been since such a meeting had been called?

Which country joined the allies because it was a rival of germany?