Mexican president nationalized his country's oil industry, thus posing a challenge to the united states policy of nonintervention in latin american affairs.

i dont know. sorry : (

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.