Nonsense 

When the people in the east suddenly said, "It is our manifest destiny to expand west," They were, I'd have to say, talking nonsense, because they think the native americans are not "true" americans, and that it was their right to have the land, not native's. It's like someone knocking on your door and saying, "excuse me, but I'm gonna live in house now, and you're gonna leave, and find somewhere else to live. Go on! this place is mine now."
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