Under the Constitution, the president is the federal official that is primarily responsible for the relations of the United States with foreign nations. The president appoints ambassadors, ministers, and consuls (subject to confirmation by the Senate) and receives foreign ambassadors and other public officials
OREGON TERRITORY FROM THE BRITISH. LOUSIANA PURCHASE FROM THE FRENCH.
It was through Propaganda and Silencing of people lead to people denying the fact that the holocaust was happening, and only rumors about concentration camps where among ally troops until they finally liberated them.
The holocaust was the mass genocide of jewish people by the nazi party so the so called "superior" german race could rule over Europe. Nazis beliwved jews were the rats that were investing Europe.
he killed millions of people who were not Germany but Jewish or they were forced to leave germany