What method of manufacturing, introduced in the early 1800s, made mass production possible?
a. the use of interchangeable parts
b. the use of hand-crafted products
c. the use of specialized labor
d. the use of expensive materials

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.