Final answer:
Categorical grants, block grants, and unfunded mandates are different types of grants in federalism. Categorical grants are specific with strict regulations, block grants are more flexible, and unfunded mandates are requirements without funding.
Step-by-step explanation:
Categorical grants, block grants, and unfunded mandates are different types of grants in the area of federalism. Categorical grants are provided by the national government to fund specific projects or programs and come with strict regulations and requirements. Block grants, on the other hand, are given as larger sums of money for more general purposes, with fewer restrictions on how the money can be used. Unfunded mandates refer to federal requirements imposed on state and local governments without providing them with the necessary funding to implement them.