Which resource is most common across the
country?

Wood

Explanation:

The abundance of forests makes wood the most common resource across the country. However, trees are not only obtained from forests, and the great variety of ecosystems across the country provides us with a great variety of wood. This has led to the use of wood throughout history in a great variety of industries.

answer; /// i believe that the correct answer is (divison of labor);

b. ensure mutual protection from communism.

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