Answer:
He was a lot of Things, but Not a great President
1. The Cuban Missile Crisis was his fault
2. The Bay of Pigs invasion was his faul
3. He escalated in Vietnam
4. Oh, and he backed an ill-advised coup in Iraq too
5. He went way too slowly on civil rights
<span>Most historians believe that the Sumerian civilization declined due to "Extreme Drought"
Hope this helps!</span>
They saw that they can improve society in the first place and upgrade everything overall instead of doing it bit by bit