How were the pharaohs of Egypt able to build huge monuments and temples that took decades to complete?

The pharaohs of Egypt were able to build enormous monuments and temples through a combination of centralized authority, vast resources, and a large labor force. They mobilized skilled workers, artisans, and laborers, often conscripting them for seasonal work, especially during the Nile's flooding when agricultural activities were halted. Additionally, the state controlled significant resources, including stone quarries and food supplies, enabling long-term projects to be sustained over decades. The monumental architecture also served as a demonstration of the pharaoh's divine power and legitimacy, motivating both laborers and the society at large.