Yuma, Arizona, is a city located in the southwestern part of the state, near the borders of California and Mexico. It is known for its warm climate, with over 300 sunny days each year, making it a popular destination for winter visitors. The city has a rich history, including its role as a military outpost during the American Civil War and its significance in the California Gold Rush. The economy of Yuma is primarily based on agriculture, with the region being one of the largest producers of lettuce and other vegetables in the United States. Additionally, Yuma is home to the Yuma Proving Ground, a major military testing facility, and offers various recreational activities, including access to the Colorado River and nearby desert landscapes.