What three regions did zheng he travel to on his naval expedition?
india, pakistan, and africa
africa, japan, and europe
europe, india, and africa
japan, india, and america

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

the court ruled that a state law that banned abortions (except to save the life of the mother) was unconstitutional

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nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.

your answer would be a) no nation can be economically self-sufficient.

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