Multiple levels of government are necessary because they allow for decision-making at various levels of society. The Federal government is needed for overarching national issues such as defense, foreign policy, and interstate commerce. For example, the Federal government is responsible for managing the military, conducting foreign relations, and regulating trade between states.
State governments are needed for issues that are better dealt with on a more local level, such as education, transportation, and public health. For example, states provide funding and oversight for public schools, maintain roads and highways, and operate public health departments that address issues such as communicable diseases and vaccinations.
Local governments, such as counties, cities, and townships, are necessary for providing essential services to residents, such as police and fire protection, garbage collection, and parks and recreation. For example, local governments hire and manage police officers and firefighters who respond to emergencies, contract with waste management companies to pick up trash and recycling, and maintain community parks and recreational facilities.
Overall, multiple levels of government are essential for ensuring that all communities have the resources and support needed to thrive and function effectively.