What is the central idea of the text? Underground Railroad (commonlit)

answer; /// i believe that the correct answer is (d)the huang he river valley;

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.

(d) he had been a leader of the sons of liberty.