Answer:
Rome was able to gain its empire in large part by extending some form of citizenship to many of the people it conquered. Military expansion drove economic development, bringing enslaved people and loot back to Rome, which in turn transformed the city of Rome and Roman culture.Explanation:
Plato who developed the theory about atlantis.
It would be the "Atlantic Slave Trade" that most altered the development and population of sub-Saharan Africa, since this area contains the countries in West Africa, which were most affected by the European slave trade due to their proximity to the Atlantic Ocean.
During the Cold War there was a concern in the United States over the expansion of communism. This fear of communism manifested itself in the domino theory an idea which governed much of us foreign policy starting in the 1950s. The domino theory was essentially the idea that if one nation fell to communism its neighboring counties would as well and this process would repeat itself almost resembling a row of dominos falling (hence the name). Because of this theory many political leaders in the us feared that if former French colonies like Vietnam fell to communism than their neighboring counties would as well including Laos, Cambodia, etc.