Task: Text Categorization
Input (English): The nations involved in it had allied immediately before it through the Treaty of Chaumont, and one of the figures involved in it continued the reforms of Karl vom Stein. Due to disagreement over Italys settlement, Spain refused to sign the Final Act of it, and Switzerland was granted a new constitution. Swedish Pomerania was given to Prussia, and a loose German confederation was established, much to the delight of Klemens von Metternich. FTP, identify this 1815 meeting that took place in Austria.
Output (English): History