Which political party was founded by Thomas Jefferson and supported strong state governments?

The political party founded by Thomas Jefferson that supported strong state governments is the Democratic-Republicans. This party emerged in the early 19th century as a response to the Federalist Party, which advocated for a stronger central government. Jefferson and his followers championed the idea that state governments should hold more power and that the federal government’s authority should be limited. They believed this approach would better protect individual liberties and promote democratic principles. The Democratic-Republicans also emphasized agrarian interests and the power of the common people, contrasting with the more aristocratic leanings of the Federalists. This foundational belief in the importance of states' rights and limited federal government defines the core principles of the Democratic-Republican Party.