League of the Macedonians
The League of the Macedonians and Koinon of Macedonia (Ancient Greek: Κοινὸν Μακεδόνων, romanized: Koinòn Makedónōn), was a confederationally-organized commonwealth institution regional state or koinon) consisting of all Macedonian communities united around a monarch. It can be paralleled from the Epirote League, but it seems that the Macedonian koinon had far less power than that of the Epirote Molossians.
Source: Wikipedia — League of the Macedonians (CC BY-SA 4.0)