To all the Americans that wrote a huge list of places - how can you be all those things? If you were born in America, raised in America and grew up culturally American - then surely you are American. Just because a person had ancestors all sorts of things, doesn't mean those things influence yourself. I could list a whole heap of Pan-European ancestral links - but I'm still just English.
It reminds me of the story about an American that went into an Irish bar and said that his Great-Grandmother was Irish so he felt at home there - to which the locals beat him up. When he asked, from his bloody, toothless state why they had beaten him up when he was Irish, the locals said, 'You're not Irish, your great-grandmother was, and she ran out on us.'