How are special districts typically created?

Residents vote to establish them based on local needs.

Explanation:

Special districts are independent governmental units that exist independently from local government. These are purpose-specific, which means that they are created with a particular goal in mind. The way these districts are created is that residents, after identifying a particular local need they have, vote to establish them and address this issue.

the president has the power to appoint federal judges, ambassadors, and other "principal officers” of the united states, subject to senate confirmation of such appointments.