The United States gained Puerto Rico, the Phillippines, and Guam from Spain as a result of the Spanish-American War. They did not get Hawaii from their victory in the Spanish American War
Feudalism was the concept that was left behind by Europe after the Hundred Years' War.
Some people cherish the world they are proud to live, Others are to busy stuck up on there computers, Phones, Tablets etc to be bothered by anything, and other don't mind the world and they are here for the ride.
Hope this helps.
Marco Polo reverently described Khubilai Khan and his palaces, along with paper money, coal, postal service, eyeglasses and other innovations that had not yet appeared in Europe. He also told partially erroneous self-aggrandizing tales about warfare, commerce, geography, court intrigues and the sexual practices of the people who lived under Mongol rule.