<Tr> <Td> <Ul> <Li> Achaemenid Assyria </Li> <Li> Seleucid Babylonia </Li> <Li> Parthian Babylonia </Li> <Li> Roman Mesopotamia </Li> <Li> Sasanian Asorestan </Li> </Ul> </Td> </Tr> <Ul> <Li> Achaemenid Assyria </Li> <Li> Seleucid Babylonia </Li> <Li> Parthian Babylonia </Li> <Li> Roman Mesopotamia </Li> <Li> Sasanian Asorestan </Li> </Ul> <Tr> <Th> Middle Ages </Th> </Tr> <Tr> <Td> <Ul> <Li> Islamic conquest </Li> <Li> Rashidun Caliphate </Li> <Li> Umayyad Caliphate </Li> <Li> Abbasid Caliphate </Li> <Li> Hamdanids </Li> <Li> Buyid amirate of Iraq </Li> <Li> Marwanids </Li> <Li> Uqaylids </Li> <Li> Al - Mazeedi </Li> <Li> Ayyubids </Li> <Li> Seljuk Empire </Li> <Li> Zengids </Li> <Li> Ilkhanate </Li> <Li> Jalairid Sultanate </Li> <Li> Kara Koyunlu </Li> <Li> Aq Qoyunlu </Li> </Ul> </Td> </Tr>

Who built the world's first empire and what did the empire include