Why would a portolan map be inappropriate as a resource for a geography class?

Portolan maps will probably not be used in a geography class because of the following reasons.

It is was a map that was used to navigate through a small area of land, the map was used on a small scale.

Secondly the portolan maps did not include the fact that the earth is spherical.

Also portolan maps where characterized by lack of map projections.

The vagaries of wind, sea and imperfect records threw off the measurements, so that upon completing a journey with the map, you wouldn’t land exactly on your starting spot.

Explanation:

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.

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