How does productivity relate to standard of living

Labor productivity is a measure of the amount of goods and services that the average worker produces in an hour of work. The level of productivity is the single most important determinant of a country's standard of living, with faster productivity growth leading to an increasingly better standard of living.

answer: the ocean

explanation: if you map out 30 n and 40 n latitude, you will get the ocean

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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