Why did Matthew Perry want the U. S. to
take measures to secure ports in the
Pacific?

He specifically recommended the acquisition of island bases in the Pacific to assure U.S. military and commercial superiority in the area, but the government was not ready to act on these proposals for roughly half a century.

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.