It was diseases like small pox because the native americans had not been exposed to these illnesses before and their immune system could not fight it off like the european's could.
one of the biggest threats was that when the eurpoeans arrived to the other side, the united states of american they threatened the native americans saying they wanted the land that the native americans were on. However the native americans went up with a fight and didnt let them.
americans
Whilst some European farms are as large as some American farms, by far the biggest are in America; there are hardly any farms in Europe to match the size of the biggest American.
They were mistaken as gods by the locals because of a prophecy and were given all kinds of treasures and gifts. Their biggest concern was about how to spread their European diseases for which the locals did not have any natural defense.
The one you experienced when you where dropped at birth
European Union
There are many European nations that were considered to be the biggest slave trader. France, Germany and Portugal are top on that list.
Germany and Italy are the biggest countries in the EU.
World War 2, September 1939 to September 1945 was the biggest war in history. It was fought over the entire planet, and involved tens of millions of people and millions died in it. The American Civil (1861 to 1865) was the worst war in American history, because it was Americans (Union soldiers) killing Americans (Confederate Soldiers), but, it was not the biggest war in the history of the planet. WW2 was by far and away, the biggest war in the history of the human race.
Moscow Moscow
Collosus of Rhodes
The European Bison