The Imperial Harem (, ) of the Ottoman Empire was the Ottoman sultan's harem – composed of the wives, servants (both female slaves and eunuchs), female relatives and the sultan's concubines – occupying a secluded portion (seraglio) of the Ottoman imperial household. This institution played an important social function within the Ottoman court, and wielded considerable political authority in Ottoman affairs, especially during the long period known as the Sultanate of Women (approximately 1533 to 1656). Multiple historians claim that the sultan was frequently lobbied by harem members of different ethnic or religious backgrounds to influence the geography of the Ottoman wars of conquest. The utmost authority in the Imperial Harem, the valide sultan, ruled over the other women in the household; the consorts of the sultan were normally of slave origin, and thus were also his mother, the valide sultan. The Kizlar Agha (, also known as the "Chief Black Eunuch" because of the Nilotic origin of most aghas) was the head of the eunuchs responsible for guarding the Imperial Harem. Etymology The word harem is derived from the Arabic or , which give connotations of the sacred and forbidden.This term further emphasizes that only women household members, and some related male family members were able to enter these areas. The word has also been traced back to meaning ‘sanctuary,’ reflecting the communal and honored aspect of the . The harem as a social and political institution As the sultan became increasingly sedentary in the palace, his family members, previously dispersed between provincial capitals, were eventually relieved of their public duties and gathered in the imperial capital. The official move of members of the Ottoman dynasty to the harem at Topkapi Palace in the sixteenth century gradually transformed the imperial harem into a well-organized, hierarchical, and institutionalized social and political structure, with rigid protocols and training. At the end of the sixteenth century, except for the sultan himself, no member of the royal family, male or female, left the capital. Both children and mothers were permanent occupants of the inner world of the palace. The harem was the ultimate symbol of the sultan's power. His ownership of women, mostly slaves, was a sign of wealth, power, and sexual prowess. The emphasis on seclusion of the harem and dynastic life from the public gaze also communicated his power, as only those closest to him had the privilege to interact with