Why is ethnic conflict common in sub-saharan africa?

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

Do larger countries receive more money in remittances than smaller countries

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic