The Ptolemaic period refers to the era in ancient Egyptian history that began after the death of Alexander the Great in 323 BCE and lasted until the Roman conquest in 30 BCE. This period was marked by the rule of the Ptolemaic dynasty, which was established by Ptolemy I Soter, one of Alexander's generals. The Ptolemies blended Greek and Egyptian cultures, promoting advancements in art, science, and philosophy. During the Ptolemaic period, the city of Alexandria became a major center of learning and culture, home to the famous Library of Alexandria. The Ptolemies also implemented a complex system of governance and maintained the traditional religious practices of Egypt, while promoting the worship of Greek deities alongside Egyptian gods.