Which of the following is a power of the federal government?

The power to declare war is a responsibility specifically assigned to the federal government by the U.S. Constitution. This authority is detailed in Article I, Section 8, where it grants Congress the power to declare war, emphasizing the centralization of military decisions at the national level rather than at the state or local levels. This power is crucial for maintaining national security and coordinating military action among the states.

In contrast, the other options pertain to powers typically reserved for state or local governments. Approving zoning and land use regulations is primarily managed by local authorities, reflecting the local government's role in community planning. Providing fire protection is also a service usually organized by local municipalities to ensure the safety and welfare of their residents. Furthermore, the issuance of driver's licenses is a state responsibility, as each state sets its own regulations that govern personal identification and vehicle operation within its boundaries.