Describe the key features of the Marshall Plan

One key feature of the Marshall plan was that it was an economic policy that implemented the March 1947 Truman doctrine. It distributed $17bn worth of aid between 1948 and 1952 through the instrument of the OECC (Organisation for European Economic Recovery) It had both political and economic effects: it aimed to funnel US money into war-torn European countries in order to avoid the spread of communism throughout Europe but also was intended as a humanitarian effort to fight against 'hunger, poverty, desperation, and chaos' (according to Marshall himself).
Another key feature of the Marshall plan was its rejection by the USSR and the states in its sphere of influence. Both Eastern and Western European governments were interested in accepting aid, but Stalin and the USSR accused the US of using 'dollar imperialism' to manipulate states. Through its influence in the Comintern it forced Poland and Czechslovakia to withdraw influence. However, Yugoslavia--communist but not part of Comintern took aid. This represented a further decline in superpower relations, as both political and economic blocs solidified.