When Egypt annexed Nubia where did they go and why did they leave Nubia?

When Egypt annexed Nubia, they primarily focused on the regions along the Nile River, extending their control in order to access its rich resources, such as gold, ivory, and valuable trade routes. However, the Egyptians eventually left Nubia due to a combination of factors, including the difficulty of maintaining control over the area, resistance from local populations, and shifting political dynamics within Egypt itself. Additionally, as resources became depleted and priorities changed, the focus shifted away from Nubia.