To allow the natural downward flow of water to irrigate a large amount of land without needing to be transported from one crop plot to another.
Hope this helps!
The slave culture made the slaves work together to survive. This promoted family, loyalty, and empathy/sympathy for each other. Due to this it caused them to not loose hope and always help each other.
I thing it's A.supreme court hope this is right
The president is isolated when his/her decisions are no longer objective due to his place in office.