Why did the framers of the US government design federalism to be different from the unitary system found in Great Britain?

The framers of the U.S. government designed federalism to distribute power between national and state governments, contrasting with the unitary system in Great Britain, where power is concentrated in a central authority. This structure was intended to prevent the concentration of power and protect individual liberties, reflecting their experience with British tyranny. By allowing states to retain significant autonomy, federalism promotes local governance and responsiveness to regional needs while still maintaining a unified national framework. This balance was crucial for accommodating diverse interests across a vast country.