He began his reign as co-regent with his father Ptolemy I from 288 BC – 285 BC
His education had been directed by Strato a representatives of the school of Aristotle,
and Ptolemy II's eager interest in science was stimulated by Aristotle and his disciples.
Expanded the Alexandria library and patronized scientific research.
He commissioned the Greek translation of the Hebrew Torah, the Septuagint
Conducted successful military campaigns against the Seleucids (the hellenistic dynastic ruling Syria), and solidified the Egypt's position as the undisputed naval power of the Aegean, eastern Mediterranean
trade routes and the sea passage through the Black Sea
Extended the Egyptian empire into Nubia and the Syria
Completed a canal from the Nile to the Gulf of Suez. The construction of this canal was begun under Necho and abandoned by Darius during the second Persian rule
At first, he made a dynastic marriage with Arsinoe I, the daughter of the powerful Lysimachus of Thrace, she had three children, one of them is Ptolemy III
He also married his full sister, Arsinoe II but had no children from her, Arsinoe II was deified after her death.
Ptolemaic Period 