Which period of Egyptian history was known for building pyramids
http://en.wikipedia.org/wiki/Egyptian_pyramids
Read the first three paragraphs VERY carefully.
The period of Egyptian history known for building pyramids is the Old Kingdom. During this time, from around 2686 to 2181 BCE, the ancient Egyptians constructed numerous pyramids as monumental tombs for their pharaohs. These impressive structures, such as the Pyramids of Giza, were built as royal necropolises, reflecting the belief in the afterlife and the Pharaoh's divinity.
To find the answer to this question, you can consult various reliable sources. Some helpful resources include history books, educational websites, or credible scholarly articles and publications focused on ancient Egypt. These sources should provide you with a comprehensive overview of the various periods of Egyptian history and the specifics of pyramid construction during the Old Kingdom.