please help me answer these questions!

help me define the termoligopoly. describe a pro and/or con for a producer and then for a consumer in an oligopoly. (You can use terms like price fixing, price wars, trusts, collusion, etc.)

what are public goods are. Tell who will gain/benefit from the creation of a public good? Then, give an example of a public good people may use on a daily basis.

whats the defineregulation. Why does the government need to regulate the market? Explain why you think it is a good or bad thing to have government regulations?

whats the define atrust. Whymay a trust bad for a consumer in the market economy?What is a possible solution taken by government to fix the problem of trusts in the market? (Be specific as to what steps government may take to make this happen).