Complex sentence: The Peace of Nikolsburg or Peace of Mikulov was signed on December 31,1621 in Nikolsburg, Moravia (now Mikulov in the Czech Republic) and was treaty which ended the war between Prince Gabriel Bethlen of Transylvania and Emperor Ferdinand II of the Holy Roman Empire.
Split into simpler sentences: The Peace of Nikolsburg or Peace of Mikulov was signed on December 31,1621 in Nikolsburg, Moravia (now Mikulov in the Czech Republic). The treaty ended the war between Prince Gabriel Bethlen of Transylvania and Emperor Ferdinand II of the Holy Roman Empire.