(mc)what was the main goal of the jim crow laws passed in the south after the end of reconstruction?

The purpose of the Jim Crow laws passed in the South after the end of Reconstruction was to segregate African American rights in the South.

Explanation:

The Jim Crow Laws were a series of ordinances and bylaws promulgated generally in the southern states of the United States or in some of their municipalities, between 1876 and 1965. These laws, which constituted the one of the major elements of racial segregation in the United States, distinguished citizens according to their racial affiliations and, while admitting their equality of rights, they imposed segregation of rights in all public places and services.  

The largest ones introduced segregation into schools and most public services, including trains and buses.

they united the colonies in their fight against the british.

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.