Why is nigeria’s economy developing?

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

The causes of the failure of the league of nations

Which region was the hearth for the largest number of agricultural animals such as pigs sheep and cows