Why do you think John Green refers to Russia as Germany's "Frenemy" when he mentions this invasion?

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Explanation:

Russia and Germany were briefly allied enemies.

Explanation:

Russia was under "communist" leadership while Germany was fascist. They did not have similar goals, in fact in the end they both wanted to take Poland. However, they had a common enemy in Western Europe and the United States, which is why they fought as "allies" for the first bit of WWII.

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

answer; if congress didn't act on certain requests;