no
There will always be a chance that a holocaust could happen anywhere and to any group of people.
There has been no Australian holocaust.
Holocaust of Kedros happened in 1944.
Holocaust of Viannos happened in 1943.
Adolf Hitler was behind the atrocities of the Holocaust.
Have you any reason at all to think that this is likely to happen? For example, are Jews persecuted in the US? Surely not!
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.
It's the responsibility of us all.
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.
The Holocaust was not the fault of the US! It is sometimes said that the US and their Allies did not do much (or anything) to stop the Holocaust. See the related question.
They talk about the holocaust?
No. The Holocaust took place in Europe between 1941 and 1945.