What country in the region has the most missionaries? Which head of state doesn't say he's a Christian? And other questions about Eastern Africa. The U.N. designation for Eastern Africa includes Burundi, Comoros, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Reunion, Rwanda, Seychelles, Somalia, Uganda, United Rep. of Tanzania, Zambia, and Zimbabwe.