The term diaspora is most directly linked to the scattering of the Jews to countries outside of Palestine after the Babylonian captivity.
Free land (well they had to pay like 10 cents), and gold (the gold rush).
I think you would need to tell both leaders to explain their problems then let the other world leaders put their mouths in.
This date is very important because it is the day the Soviet Union broke up, it's the day the cold war ended.