Final answer:
Amenenhat III commissioned the construction of the "Black Pyramid".
Step-by-step explanation:
The construction of the "Black Pyramid" was commissioned by Amenenhat III. Amenhotep III was a pharaoh of the Middle Kingdom in Egypt who ruled during the fourteenth century BCE. During his reign, he focused on constructing various monuments and temples, including his own large mortuary temple and the Serapeum temple at Saqqara.