There were more jobs in the cities, if everyone worked on a farm there wuld be more than billions of grocery stores, then they would be wasting food because not everyone would buy evrything!
The Louisiana Purchase opened up the United States at the time to the Midwest
The supply side supplies the product for us the demand side
This was known as the Freedom summer
It was an initiative to get as many African-Americans to vote as possible in the elections in Mississippi. The initiative was organized because they had historically been segregated and were not allowed to vote through various means even when they did have constitutional rights to do so, ever since the civil war.