The physical geography of East Africa is dominated by the Great Rift Valley, which extends through the middle of the region from north to south. Associated with the rift valleys are vast savannas such as the Serengeti Plain, large lakes, high mountains, and the highlands of Ethiopia.
Nutmeg was one of the things they produced. Another was paint,clothing,glass and several other products they expected the american colonies to buy.
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Europeans competed for power either through acquisition of colonies or building up its industries. When their industries were strong, they would strengthen their armies as well. If that was not enough they would form alliances with other countries to protect their interest.