He wanted continued control over Eastern Europe for his own benefits rather than for its people trying to influence other countries into becoming communist as opposed to democratic, this became know as the Iron curtain, the official division between USSR-communist and the US- democratic as the USSR tried to expand and gain more control.
The chinese peasants and peasant economy got a general boost in the amount of rights that they had, as the Mongols were herdsmen themselves (kinda).
hope this helps
