How do nations get wealthier even when available land diminishes over time?

Nations can grow wealthier despite diminishing land availability by investing in technology and innovation, which enhances productivity and efficiency in various sectors, especially agriculture and manufacturing. Urbanization allows for better resource management and economies of scale, leading to increased output from smaller areas. Additionally, nations can focus on service-based industries that require less physical space, such as finance, technology, and entertainment, to drive economic growth. Finally, trade and globalization enable countries to access resources and markets beyond their borders, further bolstering their economies.