In the ancient world, why did civilizations flourish around great river valleys? River valleys protected citizens from natural disasters.
River valleys provided an ideal environment for agriculture.
River valleys sheltered citizens from harsh weather.
River valleys contained vast mineral
resourges

In the ancient times ofcourse even now agriculture is main occupation for people. around river valleys fertilility of land is very high and there will be easy transportation

Explanation:

a case involving the laws of a single state.

the quote by walter cronkite contributes to the central idea of the text by supporting the central idea. cronkite argues that what is deemed “right” for and in america may not be good for other countries. this supports the central idea of the text, that the vietnam war was unpopular in america for multiple reasons- including cronkite’s.