920 Alamannia is formally incorporated with Germany. Eastern Switzerland thus becomes a part of Germany.
922 Rudolf II of Upper Burgundy marries Burkhard’s daughter Bertha who brings to Burgundy the upper Aargau.
930 Rudolf II acquires Arelat (Cisjurane Burgundy) as the result of a raid into Italy with Hugo of Provence. Thus the kingdom of Burgundy is reunited and Switzerland, as an important part of this kingdom, attains prominence.
937 Rudolf II of Burgundy dies. Good Queen Bertha, his widow, rules beneficently as regent for her son Conrad.
940 Conrad is placed under the guardianship of Otto I of Germany. Beginning of German influence in western Switzerland.
950 Conrad defeats the Hungarians that invade Switzerland.
962 Queen Bertha founds a religious house at Payerne. (Traditional.)
990 Ekkehard II of St. Gall, the most famous man of learning of his time, dies.
992 The serfs rise against the nobles of Aargau and Thurgau.
993 Rudolf III of Burgundy. Switzerland is turned over more and more to the clergy and the great nobles.