I think it was two challenges they faced. They faced the impact of the Great Depression and the unemployment rate of 25 percent.
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Explanation:
They encountered a large white mob in front of the school, who began shouting, throwing stones, and threatening to kill the students. ... Orval Eugene Faubus, blocked the school's entrance. Faubus had declared his opposition to integration and his intention to defy a federal court order requiring desegregation.
Valley as a result of running mountain streams reached the plains, they branched out into seven great rivers, of which five remain today.
<u>When people have a surplus of food, then the food goes down and people are no longer hungry anymore . So they began to divide up the labor and then start to do other tasks </u>
<em>hope this helps !</em>