The reason why the area of the City of New Orleans which is in the Delta of Great River were not flooded is because these areas are geographically covered by natural leeves of the river, these leeves are higher in elevation compared as compared to the adjacent areas, thus the flood water wouldn't have reached these high points.<span />
New Orleans was at the time one of the biggest ports of slave trading. This allowed the US to trade goods and sell. This made it necessary to attain it
