Describe the problem created by the european nations when they divided africa.

When European nations devided Africa, they broke tribes apart by splitting them into different countries; moreover, tribes which were at war or were hostiles to each other ended up in the same boundaries. Besides, people with different languages also were placed in the same tribe.  

To sum up, European nations ignored tribal, ethnic, and linguistic boundaries in their attempt to divide Africa in different parts.

the two atomic bombs dropped on japan in 1945 killed and maimed hundreds of thousands of people, and their effects are still being felt today. the uranium bomb detonated over hiroshima on 6 august 1945 had an explosive yield equal to 15,000 tonnes of tnt.