Final answer:
The Cochise people, also known as the Anasazi, made significant contributions to agriculture in the American Southwest by developing settled communities and introducing sophisticated farming techniques for corn and other crops.
Step-by-step explanation:
The Cochise people, who are commonly referred to as the Anasazi or Ancient Puebloans, had a substantial impact on agriculture in the American Southwest. This cultural group thrived in the region around 700-1300 CE and was adept in farming the Mesoamerican triad, which included corn (maize), beans, and squash. Their agricultural innovations involved the development of permanent settlements like Pueblo Bonito in Chaco Canyon, supporting a sedentary lifestyle and leading to the construction of large, intricate towns. These towns contained impressive multi-story buildings and kivas, ceremonial centers that were important to their communities. To support their agricultural needs, the Anasazi also created large storage pits for maize, which allowed them to sustain their populations and societies even in periods of environmental stress, such as droughts.