Duchy of Nysa
In 1742, Austria ceded nearly all of Lower Silesia to the Kingdom of Prussia in the Treaty of Berlin, except for the southern part of the Duchy of Nysa. Within the Prussian kingdom, the region became part of the Province of Silesia. In 1871, Lower Silesia was integrated into the German Empire. After World War I, the region became a separate province within the Weimar Republic.