The discovery of a large deposit off a nations shores would be what type of economic variable

positive external shocks

Explanation:

This is evident in the fact that "positive external shocks" is a term that is used to describe unexpected factors such as the discovery of gold, oil, or the sudden invention of a scientific product that can apparently enhance the financial gain of a country.

Hence, in this case, the correct answer is "positive external shocks."

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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social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they live