One factor that helped Buddhism spread to China was the way of the Silk Road.
Poland, poland was a neutral country that was protected through a social agreement and when he invaded the surrounding countries were infuriated.
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The U.S would approach a global issue by trying to send out our extra troops if we are available or by talking with the leaders of countries who are allies in wars.
Russia is the other nation a bit more likely than the UK. They would end up strategizing a way to fund a solution just as the US would or they will help by sending down sorts of weapons.
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The correct answer is A. The arts and sciences flourished during both time periods.