Complex sentence: The Abazins originally inhabited the Sadzen region in the western part of Abkhazia, but migrated from Abkhazia to Abazinia in 14th and 15th centuries, and later to other regions of the Middle East in the 18th and 19th centuries.
Split into simpler sentences: The Abazins originally inhabited the Sadzen region in the western part of Abkhazia and migrated from Abkhazia to Abazinia in 14th and 15th centuries. They later migrated to other regions of the Middle East in the 18th and 19th centuries.