How does narrator john greene describe federalism?

John Greene describes federalism as a system of governance that balances power between national and state governments, allowing for a division of responsibilities and authority. He emphasizes that federalism promotes local autonomy while ensuring a unified national policy framework. Greene highlights the complexity of this system, noting that it can lead to both cooperation and conflict between different levels of government. Ultimately, he portrays federalism as a dynamic and essential feature of a functioning democracy.