The Three Mountains What Lack in the United States primarily revolves around economic disparities and environmental challenges. Economic inequality has been a persistent issue, with a widening gap between the rich and the poor. Environmental concerns, such as climate change and pollution, also pose significant challenges. According to the U.S. Census Bureau, the poverty rate in 2020 was 9.1%, reflecting the economic struggles faced by many Americans. Additionally, the Environmental Protection Agency (EPA) reports that nearly 45% of the country's rivers and streams are not safe for fishing or swimming due to pollution. These statistics highlight the pressing need for targeted interventions to address both economic and environmental issues.