What is the land of four quarters ?

Tahuantinsuyu was also called "land of the four quarters", Incas gave to their empire

The Incas called their empire “The Land of the Four Quarters.” Their government divided the Incan land into four main sections, or regions.

disequilibrium means that either supply is greater than the demand for an available good, or that the demand for a product outstrips the available supply. it implies that the price for a is either too low creating large demand, or too high creating a large surplus of supply.

the answer is c.

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