Senusret I (Middle Egyptian: z-n-wsrt; /suʀ nij ˈwas.ɾiʔ/) also anglicized as Sesostris I and Senwosret I, was the second pharaoh of the Twelfth Dynasty of Egypt. He ruled from 1971 BC to 1926 BC (1920 BC to 1875 BC), and was one of the most powerful kings of this Dynasty. He was the son of Amenemhat I. Senusret I was known by his prenomen, Kheperkare, which means "the Ka of Re is created." He expanded Egypt that allowed him to rule over an age of prosperity. He continued his father's aggressive expansionist policies against Nubia by initiating two expeditions into this region in his 10th and 18th years and established Egypt's formal southern border near the second cataract where he placed a garrison and a victory stele. He also organized an expedition to a Western Desert oasis. Senusret I established diplomatic relations with some rulers of towns in Syria and Canaan. He also tried to centralize the country's political structure by supporting nomarchs who were loyal to him. His pyramid was constructed at el-Lisht. Senusret I is mentioned in the Story of Sinuhe where he is reported to have rushed back to the royal palace in Memphis from a military campaign in Libya after hearing about the assassination of his father, Amenemhat I. Family The family relations of the king are well known. Senusret I was the son of Amenemhat I. His mother was a queen with the name Neferitatenen. His main wife was Neferu III who was also his sister and mother of his successor Amenemhat II. The known children are Amenemhat II and the princesses Itakayt and Sebat. The latter was most likely a daughter of Neferu III as she appears with the latter together in one inscription. Later in life his father was killed. Events In his 18th year of reign Senusret I launched a military campaign against Lower Nubia and conquered the region down to the Second Cataract. The date of the expedition is mentioned on a stela from Buhen. The military campaign is mentioned in several inscriptions of this king's reign. Several local officials were involved with the military expedition. Amenemhat, governor of the Oryx nome went there with the title overseer of troops. In year 25 Egypt was devastated by a famine caused by a low Nile food. Building program Senusret I dispatched several quarrying expeditions to the Sinai and Wadi Hammamat and built