Complex sentence: Traditionally these refugees have been known as White Russians, with the corresponding Japanese term being "Hakkei-Roshiajin", a term which been applied to all former residents of the former Russian Empire.
Split into simpler sentences: Traditionally these refugees have been known as White Russians, with the corresponding Japanese term being "Hakkei-Roshiajin". In fact, this term has been applied to all former residents of the former Russian Empire.