Why did the civil war amendments have little effect in the south until 1965?

Southern States passed the Jim Crow Law which wasn't fully abolished until 1965.

The South had seceeded from the Union to form the Confederacy. They considered themselves an independent nation, and, therefore, did not follow the laws and amendments passed by the Union. In 1965, however, the Union won the war, thus ending the existence of the Confederacy.

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.