Which one of these Supreme Court cases had the BIGGEST impact on the beginning of the "Jim Crow" era?

Plessy vs Ferguson

Explanation:

The 1896 landmark Supreme Court decision Plessy v. Ferguson established that the policy of “separate but equal” was legal and states could pass laws requiring segregation of the races. This made people think that it was okay to separate people based on their race. This is why segregation was made legal, ergo this had a pretty big impact at the beginning of the Jim Crow era. Hope this helps! :3

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;

i dont know sorry why dont you looking it up on google