Question

why was constitutional states required for local government ​

Answer 1

State Government. Under the Tenth Amendment to the U.S. Constitution, all powers not granted to the federal government are reserved for the states and the people. ... The U.S. Constitution mandates that all states uphold a "republican form" of government, although the three-branch structure is not required.

Answer 2

States have the power to establish local governments, which provide important services. County governments have elected officials and carry out state laws, collect taxes, and supervise elections in an area. Local government helps with all elections. Its charter and ordinances follow state and federal law.