Probably around 2,560 BC, but some archaeologists debate it was earlier.
The great pyramids of Giza were built during the times when Khufu was the pharaoh. He ruled over Egypt from 2551 BC to 2528 BC. Khufu had built the pyramids during 2560 BC. The pyramids took a period of more than 20 years to get complete from 2550 to 2530 BC and served as a tomb when Khufu died. Find more info at the link below.
between 2650 and 1000 BC
The first of the Great Pyramids, the Step Pyramid, was built in 3700 B.C. The last pyramids in Egypt were built between 1800-1700 B.C.
All of them were built there.
In Egypt .Pyramids were built all over the world, but probably the most famous of them all are the Great Pyramids of Giza, in Giza, Egypt.
The pyramids are in Egypt!
As tombs and monuments for their kings
Giza a suburb of Cairo
No
Khufu
For tombs of the great Pharaohs
The pyramids of Egypt were built by different pharaohs during the Forth Dynasty
Giza is the site of the largest pyramids built in Egypt.
Ancient Pyramids were built in Egypt and Mexico!