Pssst. Sofia, who was in America before those Asians crossed Bering Straits?
On your premise that all Europeans came from somewhere else, we must therefore accept that we are all Africans.
You seem to be getting a bit touchy on this topic.
I am neither American or Canadian but Belizean with a significant proportion of Native American blood. Belizeans living in America also wonder why Americans call them selves something-American. Belizeans have a tiny population, about 80% of which is mixed race - Meaning ethnic chinese, , sub-continent Indian, Arab, black, caucasian and Native American and coming from a variety of countries. I for one am Native American (Maya), Arab (Palestinian) and Spanish (European). Whatever the mix, we simply call ourselves Belizeans. And universally hate those ticky boxes we are presented when living abroad.
I believe that Americans hark on about their something-America to the detriment of solidifying their own identity. (these days many may question if that is a good or bad thing) It seems that they typically stress the European-ness of their blood - which is self evident anyway. Their ought to be a revolution in teaching of recent American history instead of the myths that are taught in schools. Not just about the decimation of the Native American peoples and their culture, but also about how an United States culture has evolved since 'The Encounter'. The Europeans moving to America came in waves of immigration spurred on mostly by some human catastrophe in Europe. The Potato famine took the starving Irish there. The Highland Clearances took the Scots. These peoples migrated to particular areas of the continent for particular reasons eg: many scots ended up in Kentucky, the Virginias, Tennessee, Pennsylvania because those were the 'new lands' that were not yet occupied by previous Europeans and with the industrial revolution starting, they had employment in the coal mines.
Che Guevara who after he became a notable revolutionary received a letter from a blue-blooded Spanish woman who said that it may be possible that he was a scion of her family. He wrote back to her saying that Madam, in his opinion, he doubted so. He believed that it was much more likely that his family ran away from drudgery and near starvation in Europe to risk a better life in an unknown land. That was the case for most Americans. Why do they care about harking back to this continent that was only pleased to watch its wretched sail away?