The Rosen Federal Assembly was the legislature of the Rosen Federal Union from 1791 to 1858. Between 1791 and 1828, the Federal Assembly was composed of representatives appointed by the federal government, representatives appointed by the republics and representatives elected by business interest groups. Representation was grouped into constituencies, with Popular Constituencies (PCs) comprising republic-appointed assemblymembers, and Interest Constituencies (ICs) comprising interest group-appointed assemblymembers, often business executives and prominent millionaires who held the position as a sort of part-time job.