Macedonia was an ancient kingdom. It was founded by people similar to the Greeks. It was located in Northern Greece and modern Macedonia. Rome conquered Macedonia and Greek states in 146 BC and Romans ruled for many centuries. Byzantine Empire was Roman Empire but Greek language was official. In 7th century, Slavic tribes came to Macedonia and Greece. They were the ancestors of the Macedonians. Bulgarians ruled Macedonia in early Middle Ages. Macedonia was a part of Serbian kingdom and Empire in 13th and 14th centuries. Macedonia was a Roman province and Byzantine theme. Ottomans divided Macedonia in sanjaks. In 1912, Serbian army elibarated Macedonia and Macedonia became Yugoslav in 1918. Macedonia became Vardarska banovina in 1929. Communists created Republic of Macedonia and Macedonian nation. So, I would recognize Macedonia as state.
I did not know.