Answer:
The Mongols developed a highly technological society that emphasized formal education. European monarchies became a model for the early Mongol governments. Pax Mongolia led to regional stability, increasing trade on the Silk Road. The Mongols adopted Roman Catholicism as the official religion of the empire.
Europeans used Social Darwinism to justify empire building by their belief that they had the right and also the duty to bring the results of their progress to different countries. I believe that this would be the answer you're looking for :)
In 1803, U.S. representatives in Paris agreed to pay $15 million<span> for about 828,000 square miles of land that stretched from the Mississippi River to the Rocky Mountains and from the Gulf of Mexico to Canada. This deal, known as the Louisiana Purchase, nearly doubled the size of the United States. It's quite amazing if you ask me, that's a lot of money.</span>
It gave the people the power to make laws and elect leaders. (Apex)
