Why didn't the us stay neutral in with

When war broke out in Europe in 1914 President Wilson declared that the United States would follow a strict policy of neutrality. ... Put simply the United States did not concern itself with events and alliances in Europe and thus stayed out of the wa

China's one-child policy had been successful in lowering its birth rate, which has declined since the 1990s to an average of 1.5, which means on average women give birth to 1.5 children.

China's “one-child policy” (OCP) is the largest among the world's family planning programs. ... According to the World Bank, the fertility rate in China dropped from 2.81 in 1979 to 1.51 in 2000. The reduced fertility rate is likely to have affected the Chinese labor market profoundly.

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