To gather a large population of the people they were against efficiently to concentration camps, usually to clear ghettos without liquidation.
The answer is “ racial discrimination “.
The us and japan became allies and trading partners
This has resulted from the heterogeneous mix of the countries that are actually participated in. The Iraq and Iran were a member of this organization. There are a lot of concerns regarding the ideology, over the security of the borders, and even the internal security they were bothered by that.