In conquering their empire, not only had the Mongols revolutionized warfare, they also created the nucleus of a universal culture and world system. This new global culture continued to grow long after the demise of the Mongol Empire, and through continued development over the coming centuries, it became the foundation for the modern world system with the original Mongol emphases on free commerce, open communication, shared knowledge, secular politics, religious coexistence, international law, and diplomatic immunity.