4. By 2500 BCE, what did the Harappan civilization develop that would not be seen again for 3,000 years?

d) the constitution rights of native americans and their right to self-government on reservations

he was able to speed up production of the processing of seeds

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.