Assignment 4 Firm Competition Choose a product or service that has a history of 20 or more years. (Ranch Dressing! Examine the history of the market that delivers this product of service, not just a firm in this market. Use what you find to answer the following questions. 1. What are the characteristics of this market over time? 2. Has it become more competitive or less competitive over time? 3. Have the number of firms remained constant or has there been entry and exit in this industry? 4. What caused the observed changes in the industry over time