Which factor would have had the least impact in causing the so-called "great migration" of african americans in much of the 20th century?

The correct answer is:

Jim Crow laws banning African-Americans from most types of employment in the South.

The Great Migration of the 20th century was the movement of large numbers of southern African Americans from the rural south to northern and western cities. This migration had little to do with Jim Crow laws banning African-Americans from work in the South. The main reason was the increasing job opening due to industrial growth in northern cities.  

whats the question? im not quite understanding your question.

well let's see i know a little about the fall of the roman empore but what to say i do not have a clue of what to say. (that's 28 words) i learned about it in social studies it was quite boring really my teacher talks a lot, like a lot then gives us a bunch of work sheets not too many though.( that's 60 words)i actually almost fell asleep in class of course i really like that teacher of course she is really nice. i actually don't remember much from that class i got a b without any notes (it was an open notes test)(that's 95 words) i'm wasting time but i've gone too far to stop now i'm sorry i haven't said really any thing on the topic at all sorry not sorry haha jk.(that's 125 words ) (mike drop)