By 1200, dominions across the Alpine plateau were controlled by the Houses of Savoy, Zähringer, Habsburg, and Kyburg. Other regions were accorded the Imperial immediacy that granted the empire direct control over the mountain passes. When the Kyburg dynasty fell in 1264, the Habsburgs under King Rudolph I (Holy Roman Emperor in 1273) extended their territory to the eastern Alpine plateau that included the territory of Liechtenstein. This region was enfeoffed to the Counts of Hohenems until the sale to the Liechtenstein dynasty in 1699.