----- Nội dung dịch tự động từ ảnh ----- The Old Kingdom period in Ancient Egyptian history is also known as the pyramid building era. The Ancient Egyptians achieved the most remarkable feats of building work which have still not been surpassed, particularly given the primitive technology used to build them. There is nothing remotely mystical or magical about how the pyramids were built as is commonly thought. Further still, while popular belief is that the Great Pyramid was built using slave labour, this theory has since been debunked. The first building made in a pyramid shape is thought to be the Stepped Pyramid which consists of six steps placed on top of each other in a pyramid shape to create the world's first superstructure. The credit to finally achieving a smooth sided pyramid goes to Imhotep, an architect commissioned by King Sneferu. The pyramids were not an instant achievement, but the achievement of trial and error.