Final answer:
The Great Pyramids of Giza were built during the Old Kingdom period of Egyptian history, known as the Age of the Pyramids.
Step-by-step explanation:
The period of the Great Pyramids of Giza coincides with the Old Kingdom of ancient Egyptian history. This era marked the first continuous peak of Egyptian civilization, characterized by the construction of massive stone pyramids. The most famous pyramids found at the Giza plateau include the Great Pyramid of Khufu the pyramid of Khafre, and the pyramid of Menkaure, built approximately between 2551 BCE and 2472 BCE.