👉 The term "antifederalist" is often used to refer to a person who advocates for the separation of powers between federal and state governments. This idea was popularized by Thomas Jefferson in his Federalist Papers, which he wrote in 1803. In the Federalist Papers, Jefferson argued that the Constitution should be divided into two branches: one representing the people (the states) and another representing the government (the federal government). He believed that this division would prevent any one branch