Western Armenia (Western Armenian: Արեւմտեան Հայաստան, Arevmdian Hayasdan) is a term used to refer to eastern parts of Turkey (formerly the Ottoman Empire) that were part of the historical homeland of Armenians.[2] Western Armenia, also referred to as Byzantine Armenia, emerged following the division of Greater Armenia between the Byzantine Empire (Western Armenia) and Sassanid Persia (Eastern Armenia) in 387 AD.