What is the purpose of federalism?

Federalism is the process by which two or more governments share powers over the same geographic area. It is the method used by most democracies in the world. While some countries give more power to the overall central government, others grant more power to the individual states or provinces.

Explanation:

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.