What kids of artifacts do historians rely on when studying the past?

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!

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.