no one prevented the Holocaust, it happened.
Not really. The US was in a different continent, so it was problematic. The decision was made that the best way to stop the Holocaust was to achieve a military victory against Germany, so all efforts were made to do just that.
Germany
Hitler was the sole ruler of Germany during the Holocaust.
Holocaust, Germany in ww2
Germany planned and carried out the Holocaust.
no one prevented the Holocaust, it happened.
Germany's economy inflated after the holocaust.
there were no Jewish ghettos in Germany during the Holocaust.
There were no elections in Germany in the Holocaust.
The question suggests that many countries in some sense "intervened" [to stop] the Holocaust, but that a few didn't do so. In fact, no country "intervened" in order to stop the Holocaust. No country went to war against Nazi Germany because of the Holocaust. (Israel didn't exist as a clearly defined or independent country at the time). Politics doesn't work like that. In fact most countries that fought against Germany did so because they were attacked by Germany or one of its allies.
Not really. The US was in a different continent, so it was problematic. The decision was made that the best way to stop the Holocaust was to achieve a military victory against Germany, so all efforts were made to do just that.
Germany's name never changed during the Holocaust.
In effect the US did stop the Holocaust. By aiding the Allied victory, in defeating Germany, the Holocaust was stopped. If the US could have stopped it sooner, it is possible that they could have, but at great cost.
Germany
Germany is in Europe, anyway.The Holocaust - the extermination of the Jews - was maonly carried out in Poland.
Hitler was the sole ruler of Germany during the Holocaust.