Because nobody cared until then... (the more you delete this the more ill post it moderators...)
Answer
The social contract states that "rational people" should believe in organized government, and this ideology influenced the Declaration of Independence writers. That created popular sovereignty. He thought that every citizen was equal in the view of the government
Explanation:
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US Containment Policy is a foreign policy strategy created and executed by the US after WWII founding it’s first key purpose in the Truman Doctrine of 1947. President Harry Truman warned of the evils of communism<span> that threatened the democratic freedom of its people which like the US, the Soviet Union wanted a world modeled on their own country’s society and values. Even though the Soviet claimed they provided all citizens with economic and social rights, the US saw communism as a slave state that control the private life and thoughts of its citizens. A threat that violated both democratic rights and civil liberties of its citizens and therefore required the continued efforts of America to make sure that it did not spread to the United States and other nations that have not yet moved politically towards Soviet Union communism. As such, this Policy of Containment stated that the US would try to stop (contain) the spread of Communism by creating strategic alliances or support to help weak countries to resist Soviet advances.
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I don't know whether there were options, but one technology for which the Bantu are quite well-known is the iron smelting: numerous archaeological sites (for example in Eastern Nigeria) with remains of iron smelting have been found in the area inhabited by the Bantus.