What was significant about Valley Forge?

Valley Forge was where the American Continental Army made camp during the winter of 1777-1778. It was here that the American forces became a true fighting unit. Valley Forge is often called the birthplace of the American Army.

Explanation:

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i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

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b - those executed came from every social and economic class