Which of these had the greatest long-term impact on American Indians in the West? the spread of disease
the discovery of prairie dogs
the drawing of maps
the discovery of mountain passes

Disease

Explanation:

Diseases impacted the natives a lot more than any other option as it killed most of them.

answer: i think it might be the last one

explanation:

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.