The answer to your question is,
It weakened support for the war in the South.
-Mabel <3
Answer:
Martin Luther King Jr. gave his famous "I Have a Dream" speech during the March on Washington
True ///////////////////////////
Let us choose Extra study. Knowing that opportunity cost is related to the opportunities lost by choosing one specific course of events than others. By choosing an extra study and spend hours studying something, my opportunity cost will be the school sports practice hours that could be spent in this time. Another opportunity cost would be the social interaction, in a club, for example, lost because of the extra study decision.
Because plantation owners were mainly in the southern states. Also because there were many people that bought them from the south than anywhere else :)