Final answer:
Imhotep, the royal builder for King Djoser, designed and built the stepped Pyramid of Djoser at Saqqara, showcasing significant architectural innovation in ancient Egypt.
Explanation:
Imhotep was the royal builder for King Djoser of the Third Dynasty in ancient Egypt. He is credited with designing and constructing the first major stone monument - the stepped Pyramid of Djoser at Saqqara, which marked a significant architectural innovation during that time.
Imhotep's innovative approach of stacking stone mastabas into a towering structure with an underground complex resulted in a multitiered step pyramid that communicated the king's godlike power. His work paved the way for future monumental constructions in ancient Egypt.
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