Which empire is noted for the reunification of China and significant expansion of knowledge in Europe?

The Mongol Empire is noted for its significant role in the reunification of China, especially under the leadership of Genghis Khan and his successors. During their conquests, the Mongols not only brought together a vast region that included China but also created the Pax Mongolica, which facilitated trade and cultural exchange across Eurasia.

This empire established a network of trade routes, such as the Silk Road, which allowed for the transmission of knowledge, technology, and ideas between the East and West. As a result, many innovations from Asia, including advancements in mathematics, astronomy, and medicine, eventually made their way to Europe. This exchange contributed to a broadened understanding and catalyzed developments in various fields during the following centuries.

The other empires mentioned did influence regions and cultures, but they do not match the specific combination of reunification of China and significant knowledge expansion in Europe that characterized the Mongol Empire’s legacy.