Which factor prevented the Mesopotamian city-states from uniting before 2400 BCE? No ruler was powerful enough to take over the other city-states. The city-states rarely interacted due to the distance between them. The city-states were very diverse in their religious beliefs and practices. The languages spoken in Mesopotamia differed greatly among the city-states.

Which factors add to the greenhouse effect and are caused by human activities?

India's population is made up of percent hindus.

Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.