According to the lesson, the two nations that suffered the least from the great depression were:
japan
united states
great britain
soviet union

The Soviet Union and  Great Britain.

Explanation:

The Soviet Union´s economy was not so integrated into the world economy in the 1920s and in the 1930s. The Communists were in the process of transforming Russia and all the societies that made up the USSR. They imposed a planned economy. There was a focus on building a heavy industry and enforcing the collectivization of the countryside.

Great Britain was able to sort out the worst difficulties most countries faced. It abandoned the gold standard; this allowed to cut interest rates, to neutralize the threat of deflation and exports rose - pushed by a weaker sterling pound-, import prices fell, real wages even increased.

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