Blacks didn't have schooling, most couldn't pass the literacy test. Nor did the blacks have much money, some couldn't afford the poll tax.
"<span>B. to explain that he was protesting against unjust laws" is the correct answer. He was very calm and collected about what he was doing and this letter became quite famous. </span>
The second World War greatly reshaped ideas about national identity in America, especially for first-generation immigrants, second-generation immigrants, and African-Americans. During the war - and in the midst of the war effort - immigrants and African-Americans were welcomed into the armed services and, also, in areas of production where support was needed. Many Americans, during this time, were able to somewhat relax or surrender their prejudices. Also, for immigrants and African-Americans, they often felt they were part of American industry and service for the first time.
Petroleum is the most important resource found there.