Complex sentence: Makri was ruled by the Ottoman Empire until the Balkan Wars of 1913, instead of Greece, it joined Bulgaria since it was invaded by them and administered until the Greco-Turkish War which finally ceded to Greece.
Split into simpler sentences: Makri was ruled by the Ottoman Empire until the Balkan Wars of 1913. Having invaded the area, Bulgaria administered the area until the Greco-Turkish War, after which it was finally ceded to Greece.