Final answer:
The development around the beginning of the 4th dynasty in Egypt related to the pyramid complex at Giza was the construction of the Sphinx during the Old Kingdom. This era is known for its architectural achievements, specifically the iconic pyramids and advancements in hieroglyphic writing.
Step-by-step explanation:
A significant development around the beginning of the 4th dynasty in Egypt that relates to the form of the pyramid complex at Giza is the construction of the Sphinx. This period, known as the Old Kingdom (2613-2181 BCE), saw profound advancements in architectural techniques, allowing the construction of the impressive pyramid structures that still inspire awe today. The Giza plateau became the site of the iconic pyramids, with the largest belonging to King Khufu, flanked by the pyramids of his son Khafre and grandson Menkaure. Each succeeding pharaoh sought to create more elaborate tombs, reflecting their belief in an afterlife and the significance of monumental burial sites for ensuring the soul's survival. Hieroglyphics also flourished during this period as an essential aspect of record-keeping and decoration on tomb walls, demonstrating a well-established culture and sophisticated state under pharaonic rule.