This is false. Genghis Khan was remembered as a great leader who unified the Mongols and started the empire, but his successors expanded the empire, and the empire under Kublai Khan was about 3 time bigger than under Genghis Khan.<span />
China and Russia, but also South Korea.
There are, moreover, two considerations particularly applicable to the federal system of America, which place that system in a very interesting point of view. First. In a single republic, all the power surrendered by the people is submitted to the administration of a single government;