Karel Bendl was born in a Central European multinational great power that was created by proclamation out of the realms of who?
Austrian Empire The Austrian Empire (Austrian German: "Kaiserthum Oesterreich" , modern spelling "Kaisertum Österreich ") was a Central European multinational great power from 1804 to 1867 created by proclamation out of the realms of the Habsburgs. It was the third most populous empire after Russia and France, as well as the largest and strongest country in the German Confederation. Geographically, it was the second largest empire in Europe after the Russian Empire (621,538 square kilometres [239,977 sq mi]). Proclaimed in response to the First French Empire, it overlapped with the Holy Roman Empire until the latter's dissolution in 1806. The "Ausgleich" of 1867 elevated Hungary's status. It became a separate entity from the Empire entirely, joining with it in the dual monarchy of Austria-Hungary.
Polish–Czechoslovak confederation The Polish-Czechoslovak federation, or federation, was a political concept from the time of World War II, supported by the Polish government-in-exile and, to a lesser extent, the United Kingdom and the United States. It was a revitalisation of the Międzymorze concept, proposing the creation of a federation based on Poland and Czechoslovakia. The project had less support in the Czechoslovak government-in-exile, which believed it did not need Polish support against the Soviet Union, and was eventually sunk by the growing Soviet dominance, as Joseph Stalin did not want a strong and independent federation in Europe that could threaten his designs for Eastern Europe.