3 ms·nation of immigrants Technically, most Americans were born in America.by tosseraccount 10y agonation of immigrants Technically, most Americans were born in America.bgribble 10y agoYes, but only about 2% have a significant ancestry in the Americas back more than 500 years. Relative to most of the rest of the world, almost all Americans are newcomers.cwilkes 10y ago500 years? Like 20 years after Columbus?