ECO 365 (Principles of Microeconomics)Week 4ECO 365 Week 4 DQ 1What is an externality? Provide examples. How does an externality affect the market outcome? Is it possible for a governmentâs solution to a market failure to actually worsen the failure? Explain your answer.ECO 365 Week 4 DQ 2What are the differences among horizontal, vertical, and conglomerate mergers? What does the U.S. government hope to achieve through the use of its antitrust policy? How do the resolutions of the IBM®, AT&T®, and Microsoft® antitrust cases differ? How does international competition affect domestic antirust policy?ECO 365 Week 4 DQ 3What is the cost/benefit approach that a typical economist takes to analyze regulations? What are the goals of taxation? How are economic policies impacted by politics, and how politics make a positive or a negative contribution to economic policy? How does antitrust policy and regulation affect economic welfare?· ECO 365-Week 4Differentiating between Market Structures Simulation (1200+ Words)· ECO 365-Week 4 Learning Team Market Trend Paper