Secondary; The events are 100 years apart. There is virtually no chance of it being primary.
A. THE SOVIET UNION is the country that turned down U.S. offer of economics assistance in the Marshall Plan.
The Soviet Union refused the offered aid for the reason that accepting the Marshall Plan would constitute too much foreign interference in their Soviet economy.
The Marshall Plan was created as an American initiative to aid Western Europe after the World War II. This aid will be given after the fulfillment of their set conditions. The conditions were: each country must lay out a four-year plan that explains the procedures the country has to undergo for the intended economic transition; their government must also set aside "counterpart" funds subject to the spending discretion of the U.S. administrators.
I would go D, anyone disagree?
Four empires collapsed: the Russian Empire in 1917, the German and the Austro-Hungarian in 1918
