Because they were so close to these rivers, they serve as sources of drinking water. What gave opportunity for people to settle and become sedentary, focusing initially on agriculture and land security, with this the population grew and avoided the risks of nomadic communities, not having to go to places unknown or dangerous or run out of food. Therefore, over time they then focused on more complex areas such as politics, economy and architecture. Promoting the development of the community that over the years were the foundations of modern civilization.
Answer:
The administration of John F. Kennedy
Explanation:
John Lewis was the<em> head</em> of the Student Nonviolent Coordinating Committee. Becoming a chairman of the organization was also brought by his experienced of being mobbed by a white man when he was younger. In order to address racial discrimination and his full support of the Civil Rights bill, he made a speech which was addressed to the administration of John F. Kennedy <em>(the President of that time).</em> The speech was delivered during the "March on Washington."
Some revisions were made before he could deliver it because it sounded too inflammatory.
Thus, this explains the answer.
