Although Gunpowder was created by the Chinese and remained a monopoly until the 13th century, once Europeans were able to use it, the Era of Discoveries changed deeply. It was one of the reasons that the conquest and the colonization of the Americas by the Europeans was possible. Without guns and gunpowder, Europeans would have to fight a long war with a series of Native Americans in all the Continent. Guns made the job easier and this is why the death toll was super high.
