1. Cotton: In this video we are shown a series of technological innovations that have allowed the United States to maintain a comparative advantage in producing cotton. We learn that since the 1950s cotton yields (the amount of cotton that can be harvested from a single acre) have almost tripled. This means that a farmer today is able to get three times as much cotton from the same land that her grandfather worked only 65 years ago. Identify three technological innovations that made this possible and explain why they were so important