Answer:
I don't mean to dot his story
:
Monopoly: There is a single seller in the market
Oligopoly: every company in this market structure is aware of the actions of the other companies (oligopolies are a small number of companies controlling the markets- there are elements of collusion in this structure because the firms work together to control prices and the market)
Perfect Competition: There are no barriers to entry (lots and lots of competing companies that each have a small share of the market)
Collusion: 3 companies secretly enter into a price agreement (this is illegal in many cases)
The united principles of the united states of America were voted for Donald Trump but some people are not voting Donald Trump
The answer to your question is A. Pakistan.
He patented the cotton gin which revolutionized the production of cotton removing seed later on cotton became America’s leading export