Babylonia

[bab-uh-loh-nee-uh, -lohn-yuh] /ˌbæb əˈloʊ ni ə, -ˈloʊn yə/
noun
1.
an ancient empire in SW Asia, in the lower Euphrates valley: its greatest period was 2800–1750 b.c.
Capital: Babylon.
British Dictionary definitions for Babylonia

Babylonia

/ˌbæbɪˈləʊnɪə/
noun
1.
the southern kingdom of ancient Mesopotamia: a great empire from about 2200–538 bc, when it was conquered by the Persians