This would have the content of an actually valuable conversation if you could figure out how to ask questions without making their purpose to come off as incredulous and incurious as you are right now.

It's literally in Mein Kampf. Lebensraum is explicitly intended to be a mirroring of the US doing westward expansion into land held by native tribes. In his writings he made the comparison all the time. It's not a secret unless you had an American education.

They even had illustrated children's books writing a new national mythos along the same lines as cowboys and indians. The United States is Nazi Germany 200 years after Hitler won the war.