The ancient kingdom of Macedonia John is thinking of, contrary to the nationalist propaganda he just shared with us above, actually did include Thrace (Greek Macedonia), Bulgaria, and the present-day country of Macedonia (North Macedonia). But see the caveats of the quiz: before the time of Alexander the Great. At this time the places that Greek-speaking peoples colonized were areas that they could get to by sea. The contemporary country of Macedonia you are probably thinking of is inland, landlocked, and tucked away behind some mountains. Notice that every single one of these countries on the quiz border the Black Sea or the Mediterranean.
Thrace and Macedonia were distinct regions in ancient times but borders shifted frequently or overlapped. I wasn't trying to say they were synonymous.
decentralized administration of macedonia and thrace
another helpful map
According to the source (the map that is linked), the entirety of the modern day country is located on Greek settlement lands.