What are the main macro economic problems that retailers face?

An example for each of the 4 market structures Pure competition monpolistic competition oligopoly monopoly Examples and why those companies are that market would be great? How do you calculate the rate of inflation and what factors are considered in determining it? How did the organization of petroleum exporting countries embargo contribute to stagflation problem in the early 1970s? How much is a 1972 type 2 Eisenhower 1 dollar coin? Will we get good crop if we planted maize last summer? Why money transaction system is better than barter system? Why is it essential for business people to consider all fixed costs of production when making strategic decisions? How do tides help trade and fishing? Why is average cost and average variable cost are both you shaped? How Short-Term Interest rate future are Priced? What do you call a system of government where the dictator uses stringent personal and economic controls and suppresses the opposition through terror and censorship? Why is land important in a business? What Yearly return of an event is called? An economic system in which companies compete for profits is known as what? What has been a major cause of the increase in the supply of labor in the last 35 years? What is the difference between avoidable cost and unavoidable cost? Is it likely that wants will ever be satisfied? What would a slave have worried about most when coming up for auction? How much money is the fur industry worth? How much do high class bartenders get paid per hour?