Where does “maķedonietis” come from?

maķedonietis (Latvian) comes from Latvian Maķedonija, from Ancient Greek μακεδονία, from Ancient Greek μακεδνός, from Ancient Greek μακρός, from Proto-Italic makros, from Proto-Indo-European mh₂ḱrós, from Proto-Indo-European meh₂ḱ- — to raise, increase; long.

maķedonietis (Latvian): a Macedonian, a man from North Macedonia;...