Haliacmon-Aoös line
The Haliacmon-Aoös line was a proposed demarcation line in Greek foreign policy during the Great Eastern Crisis. It connects the Aegean Sea and the Ionian Sea along the rivers Haliacmon and Aoös. Due to British diplomatic pressure, Greece initially elected to remain neutral in the crisis, but expected some territorial compensation in the form of advancing the Greek border northwards to the Haliacmon-Aoös line.
In the end, following the Russo-Turkish War of 1877-78 and the Treaty of Berlin, Greece's demands were only partially fulfilled with the Annexation of Thessaly and Arta.
