Loss of factory jobs led to less in the middle class or you needed to work a white collar job to be middle class.
Industrial jobs moved overseas leaving those working in factories without jobs. Middle class jobs no longer included factory work but rather service jobs many requiring college degrees.
The death of the hostages.
<span>The Gulf Coast has a lot of "oil deposits" which has developed into an important industry in the South, since this is where a great amount of oil is shipped from ports such as those in Louisiana. </span>
The answer is gunpowder and square sails
