What are the historical origins of federalism?

Massachusetts had to hire its own army to put down Shays' Rebellion. The solution was to find a middle way, a blueprint of government in which the powers were shared and balanced between the states and national interests. That compromise, woven into the Constitution and the Bill of Rights, became known as federalism.

African americans at the time just came out of slavery and needed money to provide for there families. so they joined for the money mainly.

Bbecause the jim crow laws were made to make voting difficult for african americans