Please confirm that this awnser is right please only awnser if you are 100% sure it’s right ( I will brainlist)

What was the main motivation for the early populists

How did nationalism transform the identity of africans

How does the principle of federalism affect the u. s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d. it divides the federal and state governments into three branches