Answer the following question by reasoning step-by-step. Were Greeks essential to crafting Egyptian Lighthouse of Alexandria?
The Lighthouse of Alexandria was an impressive monument in Egypt. The Lighthouse of Alexandria was built by pharaoh Ptolemy II. Ptolemy II was the son of Ptolemy I Soter. Ptolemy I Soter was a Greek bodyguard of Alexander the Great and became pharaoh of Egypt. Therefore, the final answer is yes.