How did the use of factory machines change life in America? They replaced the work of people, causing Unemployment. Machines were expensive and made goods more expensive. Machines helped make and deliver goods quickly and cheaply. They made goods of lower quality causing demand for handmade items.

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.

any answer

i think the answer is   b.