Original: In 1798, the lands of the canton of GraubÃ 1\/4 nden became part of the Helvetic Republic as the Canton of Raetia. With the Act of Mediation the "perpetual ally" of Switzerland became a canton in 1803.
Simplified: The lands of the canton of GraubÃ 1\/4 nden were part of the Helvetic Republic, but the "perpetual ally" of Switzerland became a canton in 1803.