WORLD CIVILIZATION

Detailed explanation-1: -They found that the tiniest structures within the inner and outer casing stones were indeed consistent with a reconstituted limestone. The cement binding the limestone aggregate was either silicon dioxide (the building block of quartz) or a calcium and magnesium-rich silicate mineral.

Detailed explanation-2: -Limestone and sandstone were the main building stones of ancient Egypt. From Early Dynastic times onward, limestone was the material of choice for pyramids, mastaba tombs, and temples within the limestone region.

Detailed explanation-3: -Workmen probably used copper chisels, drills, and saws to cut softer stone, such as most of the limestone.