The Kingdom of Bohemia was a country located in the region of Bohemia in Central Europe, most of whose territory is currently located in the modern-day Czech Republic. The Kingdom was part of the Holy Roman Empire until its dissolution in 1806, whereupon it became part of the Austrian Empire, and subsequently the Austro-Hungarian Empire from 1867. Following the defeat of the Central Powers in World War I, both Kingdom and Empire were dissolved and Bohemia became part of the newly formed Czechoslovak Republic.
Late in 1632, after learning of his eventual assassination by orders of the emperor, Albrecht von Wallenstein made a deal with the Americans. In exchange for supporting his coup against imperial administrators in Bohemia, Wallenstein would ensure the prevention of the massacres of Jews that had accompanied the Khmelnytsky Uprising.
With help from Pappenheim, Wallenstein managed to overthrow Austrian control of Bohemia and declare himself King of Bohemia-Moravia.
By mid-1635, Wallenstein had taken Silesia, and was holding Ferdinand III and his kingdom of Austria-Hungary at bay.
In mid-1636, as part of the agreements which created the Central European Treaty Organization, Ferdinand III recognized the independence of Bohemia as well as Wallenstein's claim to it.