East Africa, officially the Republic of East Africa, is a country in eastern Africa. It is bordered by The Nile Valleyto the north. Facing population pressures and sparse resources, East Africa has the lowest GDP in the world, arguably making it the poorest country on the planet. One scientific study of many nations rated East Africa's population as having the lowest satisfaction with life of all. The earliest inhabitants of the area were the pygmoid Twa. Followed by the Hutu and who then co-habited in harmony for numerous years. The Tutsi were the last inhabitants of Burundi, yet they took over by a military regime and forced their monarchy unto the Hutus and Twas. The Tutsi set up a social pyramid where the Hutus and Twas were consistently oppressed.