<Table> <Tr> <Td_colspan="3"> Seljuk Empire </Td> </Tr> <Tr> <Td_colspan="3"> آلِ سلجوق Āl - e Saljuq </Td> </Tr> <Tr> <Td_colspan="3"> <Table> <Tr> <Td> </Td> <Td> 1037--1194 </Td> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td_colspan="3"> Seljuq Empire at its greatest extent in 1092, upon the death of Malik Shah I </Td> </Tr> <Tr> <Td_colspan="2"> Capital </Td> <Td> <Ul> <Li> Nishapur (1037--1043) </Li> <Li> Rey (1043--1051) </Li> <Li> Isfahan (1051--1118) </Li> <Li> Merv, Eastern capital (1118--1153) </Li> </Ul> <Ul> <Li> Hamadan, Western capital (1118--1194) </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Languages </Td> <Td> <Ul> <Li> Persian (official & court language; lingua franca) </Li> <Li> Oghuz Turkish (dynastic and military) </Li> <Li> Arabic (language of law, theology and science) </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> Religion </Td> <Td> Sunni Islam (Hanafi) </Td> </Tr> <Tr> <Td_colspan="2"> Government </Td> <Td> Sultanate </Td> </Tr> <Tr> <Td_colspan="2"> Sultan </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 1037--1063 </Td> <Td> Toghrul I (first) </Td> </Tr> <Tr> <Td> </Td> <Td> 1174--1194 </Td> <Td> Toghrul III (last) </Td> </Tr> <Tr> <Td_colspan="2"> History </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Tughril formed the state system </Td> <Td> 1037 </Td> </Tr> <Tr> <Td> </Td> <Td> Battle of Dandanaqan </Td> <Td> 1040 </Td> </Tr> <Tr> <Td> </Td> <Td> Battle of Manzikert </Td> <Td> 1071 </Td> </Tr> <Tr> <Td> </Td> <Td> First Crusade </Td> <Td> 1095--1099 </Td> </Tr> <Tr> <Td> </Td> <Td> Battle of Qatwan </Td> <Td> 1141 </Td> </Tr> <Tr> <Td> </Td> <Td> Replaced by the Khwarezmian Empire </Td> <Td> 1194 </Td> </Tr> <Tr> <Td_colspan="3"> Area </Td> </Tr> <Tr> <Td> </Td> <Td> 1080 est . </Td> <Td> 3,900,000 km (1,500,000 sq mi) </Td> </Tr> <Tr> <Td_colspan="3"> <Table> <Tr> <Td> Preceded by </Td> <Td> Succeeded by </Td> </Tr> <Tr> <Td> <Table> <Tr> <Td> </Td> <Td> Oghuz Yabgu State </Td> </Tr> <Tr> <Td> </Td> <Td> Ghaznavids </Td> </Tr> <Tr> <Td> </Td> <Td> Buyid dynasty </Td> </Tr> <Tr> <Td> </Td> <Td> Byzantine Empire </Td> </Tr> <Tr> <Td> </Td> <Td> Kakuyids </Td> </Tr> </Table> </Td> <Td> <Table> <Tr> <Td> Sultanate of Rûm </Td> <Td> </Td> </Tr> <Tr> <Td> Anatolian beyliks </Td> <Td> </Td> </Tr> <Tr> <Td> Ghurid Dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Khwarezmian Empire </Td> <Td> </Td> </Tr> <Tr> <Td> Ayyubid dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Atabegs of Azerbaijan </Td> <Td> </Td> </Tr> <Tr> <Td> Burid dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Zengid dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Danishmends </Td> <Td> </Td> </Tr> <Tr> <Td> Artuqid dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Saltukids </Td> <Td> </Td> </Tr> <Tr> <Td> Shah - Armens </Td> <Td> </Td> </Tr> <Tr> <Td> Shaddadids </Td> <Td> </Td> </Tr> </Table> </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Td_colspan="3"> Seljuk Empire </Td> </Tr>

When did the seljuk empire begin and end