["The Manchester School, Volume 94, Issue 3, Page 309-328, June 2026. ", "\nABSTRACT\nThis article examines how the middle‐income trap occurs in developing economies, and how fiscal policies and development strategies can help them avoid or escape this development challenge. Using a dual‐sector model with public investment in infrastructure and education, we analyze how different policy choices affect growth trajectories and development outcomes. The findings suggest that appropriate fiscal policies and investment strategies are crucial for avoiding development traps and achieving sustainable economic growth. However, insufficient infrastructure investments can lead to the stagnation of industrialization and economic development, potentially leading to a middle‐income trap. The model also reveals an important relationship between poverty and middle‐income traps, showing that even after escaping initial poverty through external assistance, countries need appropriate fiscal policies to achieve sustainable development.\n"]