After her death and his later rise to being the pharaoh of the kingdom, he created the largest empire Egypt had ever seen; no fewer than seventeen campaigns were conducted, and he conquered from Niya in north Syria to the fourth waterfall of the Nile in Nubia. Officially, Thutmose III ruled Egypt for almost fifty-four years, and his reign is usually dated from April 24, 1479 BCE to March 11, 1425 BCE; (1504 BCE to 1450 BCE according to High Chronology) however, this includes the twenty-two years he was co-regent to Hatshepsut—his stepmother and aunt. During the final two years of his reign, he appointed his son—and successor--Amenhotep II, as his junior co-regent. When Thutmose III died, he was buried in the Valley of the Kings as were the rest of the kings from this period in Egypt.