 Leventina was a subject of the canton of Uri until 1798, the year the Helvetic Republic was founded, when it became part of the new canton of Bellinzona along with the Swiss condominiums of Bellinzona, Riviera and Blenio.The condominiums of Locarno, Lugano, Mendrisio and Vallemaggia became part of the new canton of Lugano in 1798.These two cantons formed into one canton — Ticino — in 1803 when it joined the (restored) Swiss Confederation as a member canton.