This is known as the Anaconda Plan.
This military strategy, developed by Union General Winfield Scott, was meant to starve the Confederacy out of their resources. Essentially, Scott felt that if the Confederacy could not trade for goods with other countries they would not be able to survive. This is due to the Confederacy's reliance on cotton as their main cash crop.
This strategy helps to explain why the US wanted to blockade trade with other countries as well as why the Union wanted to control the Mississippi River, as they knew control of this waterway could negatively impact the Confederacy's ability to transport/obtain resources.
Perfect competition is a standard of the business based on the hypothesis that a substantial fraction of organization to design similar goods utilized by a wide amount of customers. The prototype of perfect competition also implies that it is comfortable for modern organizations to penetrate the market including for surviving unities to give up. Moreover ultimately, it implies that consumers and merchants have comprehensive knowledge about market requirements.