noun
Western Roman Empire
Historical term referring to the western half of the Roman Empire after the division in 395 AD, which fell in 476 AD.
西ローマ帝国は476年に滅亡した。
The Western Roman Empire fell in 476.
The Eastern Roman Empire (Byzantine Empire), which survived until 1453.
Compound of 西 (west) + ローマ (Rome) + 帝国 (empire), a direct translation of 'Western Roman Empire'.