When was the hub invented

2010

Explanation:

I looked it up on the internet

answer: c  

the factory goes out of business, causing the workers to lose their jobs.

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.