Why is the pyramid of Menkaure the smallest?

The Pyramid of Menkaure is the smallest of the three main pyramids at Giza, primarily due to its construction timeline and resources. Built during the Fourth Dynasty, it reflects a shift in pyramid construction practices, including a move towards smaller structures. Additionally, Menkaure's reign may have faced economic challenges that limited the availability of labor and materials, resulting in a less grandiOSe pyramid compared to those of his predecessors, Khufu and Khafre.