Article Ill of the Constitution gives Congress the power to create a system of federal courts, other than the Supreme Court,
known as

Checks and balances system I'm pretty sure.

Explanation:

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.