Killing individuals with undesirable traits could strengthen an overall population. It's basically artificial selection, or man made evolution. Think of breeding dogs, you let the dogs with the most desirable traits breed, while you kill off (or prevent from breeding) the runts.
The expansion of Islam along the eastern coast of Africa happened between the 8th and 9th centuries when travelers, Arab traders and clerigs began to spread the religion. <u>The presence of Muslim merchants stimulated the development of urban communities; mosques were built and a Sudano-Sahelian building style was adopted. The expansion of Islam was good for African societies since it brought new techniques of weighting and the art of writing to Africa.</u>
Answer:
to clean up Lincoln's country wars a conflict over economic control of the area
Nixon used the new US closeness to China to negotiate the agreement with the Soviet Union. When relations between China and the Soviet Union deteriorated, the United States established diplomatic relations with China to weaken the influence of the Russians. Later the U.S. and U.S.S.R. signed the Anti-Ballistics treaty that limited the number of missiles on both sides but improved relations between them.
