[Solved] Early Supreme Court Decisions

1. Speed limits and drinking ages fall under the police powers of state government, yet the national government has established maximum speed limits and uniform drinking ages.  How is it possible for the national government to encroach on the reserved powers of the states? (300 word minimum)

2. How did early Supreme Court decisions, such as McCulloch v. Maryland and Gibbons v. Ogden, impact the relationship between the federal and state governments? (300 word minimum)