There are many different theories about the purpose of the Great Pyramid. Along with not being able to conclude absolutely who built the Great Pyramid, mankind also does not understand why it was built. Many believe that Pharaoh Cheops (or Khufu) built the Great Pyramid for his tomb around 3350 BC, because many of the other pyramids in the area have been found to be burial chambers for the various kings of Egypt. Now, there are some that believe the Great Pyramid monument was a time capsule left by an advanced civilization. There may have been some leaders of this civilization wanted to leave a message to future civilizations. Others think it was some civil service project.
So the Pharaoh could make a big entrance.
A major purpose for building the pyramids was to serve as monumental burial sites for pharaohs and high-ranking officials in ancient Egypt. These structures were designed to honor the deceased and ensure their safe passage to the afterlife, reflecting the civilization's beliefs in immortality and the divine nature of their rulers. Additionally, the pyramids demonstrated the pharaoh's power and wealth, showcasing the civilization's architectural and engineering prowess.
Pharaoh tombs.
Egypt"s major achievement was creating the Pyramids!
For the Pharaoh tombs
To protect their bodies.
They used limestone blocks to build the pyramids
The pyramids that you are talking about were built to hold the remains of dead Egyptian (and other) pharoahs.
Egyptian pyramids were basically large elaborate tombs/memorials. Pharaohs commissioned the pyramids to be built so they could be buried inside.
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Pyramids of Giza
Egypt is the major answer.