Original sentence: It was once widely spoken, and had a literature, but was since eliminated in Russia.Modern Mongolians are generally proud of the empire and the sense of identity that it gave to them.Russia rose to prominence at the same time that Russian rulers were accorded the status of tax collectors for Mongols.The Mongol empire (Western) unified much of the Central Asian Republics that formed part of the erstwhile USSR.The Mongol empire is traditionally given credit for reuniting China and expanding its frontiers.The Russian ruler Ivan the Terrible overthrew the Mongols to form the Russian empire.Today, in a  number of Central Asian nations, Tamerlane and other Mongol figures are viewed as important symbols of national identity rather than as "feudal oppressors"
Edited sentence: A number of principles by which the empire was ruled continue to be emulated in modern times, and form the basis of several principles of modern democratic states.In fact, the Russian ruler Ivan the Terrible overthrew the Mongols to form the Russian empire.It was once widely spoken, and had a literature, but was ruthlessly eliminated in Russia.Modern Mongolians are proud of the empire and the sense of identity that it gave to them.Russia rose to prominence during this time because Russian rulers were accorded the status of tax collectors for Mongols.The Mongol Empire set an example of religious tolerance.The Mongol empire (Western) was also responsible for unifying much of the Central Asian republics that formed part of the erstwhile USSR.The Mongol empire has always been given credit for reuniting China and expanding its frontiers.Today, in a  number of Central Asian nations, Tamerlane and other Mongol figures are viewed as important symbols of national identity rather than as mere "feudal oppressors"