Research the history and business model of Southwest Airlines. Based upon your research, detail how and why Southwest has grown to become one of the nation’s largest passenger airlines. Compare the Southwest model to its competitors. What are its strengths, weaknesses, opportunities, and threats? Based upon your research, do you believe Southwest has a long-term competitive advantage? If so, why. If not, why? Depending upon your opinion, what steps should Southwest take to maintain their commercial viability in the future.