Depends on the level but for national govt of a federated republic its main ones is preventing foreign invasion and being a final arbiter in disputes between states.
Then you can argue that it should issue a national currency to facilitate international trade and commerce between states. Arguably to create and enforce IP laws nationwide, again as a means to encourage commerce between states.
Depends on the level but for national govt of a federated republic its main ones is preventing foreign invasion and being a final arbiter in disputes between states.
Then you can argue that it should issue a national currency to facilitate international trade and commerce between states. Arguably to create and enforce IP laws nationwide, again as a means to encourage commerce between states.