How did geography affect indus river valley civilizations?

a. constant monsoons led to destructive flooding.

b. mountainous terrain resulted in many invasions.

c. landmass formations encouraged trade with neighboring civilizations.

d. flooding separated many settlements from rivers and the arabian sea.

i think they came to washington to protest

islam spread slowly through much of africa through trade and preaching.

the exodus of these people from constantinople contributed to the revival of greek and roman studies, which led to the development of the renaissance in humanism and science. byzantine emigrants also brought to western europe the better preserved and accumulated knowledge of their own greek civilization