Well, based on the information and choices given your answer is going to be "<span>a. expanding China’s overseas trade"
This had been something that Zheng He had done that actually did some really great stuff back then.
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"The Articles of Confederation served as the written document that established the functions of the national government of the United States after it declared independence from Great Britain."
The national judiciary hears cases involving federal law and interstate cases. It also interprets the constitutionality of laws.
some for exploration and others moved here because they were no excepted in there social society