They didn't die out. A lot of them died, yes, but the Jewish people are still around.
Depends on what you meen by pst war. the white Australia policy was still inforce, and as such only immigration from Europe (preferably UK) was permitted. the assisted migration scheam lasted from the late 1940's till the 50's. it was not until 1973 that the white Australia policy was revoked. Proberbly asa result of the large numbers of Veitnamese boat people who arived between 1972-75 (ish).
so if by post war you meen immediate anyone not of European decent could not immigrate
In the US, the Great Depression in the US, which was shared to a large degree by many European nations, did shape the American landscape in a negative fashion. Society in the US suffered. The depression was ended by WW 2. Firstly, it began to produce products for the warring nations in Europe. Thus jobs grew as well as industry. America's forced entry into WW 2 was sad for the deaths it caused. However, unless Nazi Germany and Imperial japan were defeated. America would stand alone as the only major democracy n the world. It's very existence would have been threatened if Hitler had the atomic bomb first. So, in summary, WW 2 impacted society in a positive way and defeated the enemies of freedom.
There were several different things that Japan was involved in, like Pearl Harbor. They bombed Pearl Harbor because we took away their natural resources because of what they were doing to China so they advanced in China and took over a part of China that was rich in natural resources and then attacked Pearl Harbor. The Japanese also Attack Astraila in Sydney Harbor they launched midget submarines and actually killed some people but they were killed before too many died you can also look up what they did in china which had a big effect on the war the Japanese treated the Chinese like the Nazi's treated the Jewish people as shown in the Rape of NanJeing.
This answer means nothing to me - please get writers to write 'grammar' and then we can all understand the answer... I glean nothing from this.