Answer: Zheng He
He led seven ocean expeditions for the Ming Empire. These voyages were about diplomatic relations, military and more. The answer is Zheng He.
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From the choices provided, it is <span>a. zworykin.
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I would put, “Contains the House of Representatives and Senate” because the Legislative Branch will include the Congress (the Senate and House of Representatives) and special agencies and offices that will support services to Congress.