The 'world' didn't care.
__________
A lot of the world didn't know the situation was as bad as it was in Europe during that time.
___________
Actually, the Holocaust was regularly reported in the media in Allied and neutral countries from November 1942 on, but seems not to have registered widely. Part of the trouble was that in practical terms there was very little that the Allies could do about it - and of course many people just didn't care.
The main reason was that no one knew it was going on. The prisoners of the concentration camps weren't escaping or living to tell, so no one would know, and the Nazi's certainly weren't going to tell anyone. Allied planes first discovered the camps when they were flying over the camps. Before that, the allies had no idea what was happening to these people. And what would anyone in Germany do about it? Go to the police? The police were the ones committing the crimes.
Hitler was probably using Propaganda to make the people believe that this is what the country needed. The Nazis were formed and they would make people believe. Nobody "let" the holocaust happen. Many countries were involved in fighting Germany to stop the holocaust. The Jews of course tried to stop it, but the Nazis could kill them off easily.
_________if an event similar to the Holocaust were to happen, then they would give it it's own name, like they did with the Holocaust.
European Jews.
Yes, the Holocaust survivors did get reparation. West Germany agreed to pay Israel for slave labor and persecution for what happen during the Holocaust.
No, Britain wasn't occupied by the Nazis.
From January 1944 on they were sent to camps.
The Treaty of Versailles did not 'let the holocaust happen'. You are making too many leaps. Even when Hitler came to power it was not obvious that there would be a holocaust.
A better question is why did we let it happen.
There has been no Australian holocaust.
The Holocaust is not a recurring event.
He approved of the Holocaust and was the one who made the Holocaust happen.
Holocaust of Viannos happened in 1943.
Holocaust of Kedros happened in 1944.
No, not here on this planet. We honor our many dead, wounded and displaced persons each year so as to remember to never let it happen again.
no
Adolf Hitler was behind the atrocities of the Holocaust.
if an event similar to the Holocaust were to happen, then they would give it it's own name, like they did with the Holocaust.
No. The Holocaust took place in Europe between 1941 and 1945.