B. The Communists and Guomindang formed a united front to fight the Japanese.
A should be the answer or D
Answer: The domestic slave trade, also known as the Second Middle Passage and the interregional slave trade, was the term for the domestic trade of slaves within the United States that reallocated slaves across states during the antebellum period.
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Reformers in the U.S. adopted the idea that students should have access to the same content at similar grade levels.
