The term federalism is best defined as

(1) the process of amending a constitution

(2) the power of the courts to determine the

constitutionality of laws

(3) a republican form of government with no

hereditary ruler

(4) the division of power between the states and

the national government

Federalism is the concept of power division: between the central government and the local governments that have some autonomy over their local matters. For example, in the US marriage equality used to be decided on a state level.

The correct answer is: (4) the division of power between the states and

the national government