Both Fribourg and Solothurn, which had participated in the Burgundy Wars, now wanted to join the confederation, which would have tipped the balance in favour of the city cantons.
Tanto Friburgo como Soleura, que participaran nas Guerras de Borgoña, querían unirse á confederación trala guerra, o que desequilibraría a balanza a favor dos cantóns urbanos.