The Morava – Vardar valley, the central Balkan communication in the north–south direction, has always had a significant and sometimes a key role in the cultural and historical processes in the broader area of South-eastern Europe. This fact especially applies to the transitional periods, which are usually filled with migratory movements and ethno-cultural exchanges. Such were the centuries during the transition from the Bronze Age to the Iron Age, which marked a decline in cultural and civilisational values, filled with migrations, military campaigns, and destruction. From the 13th to the 11th century BC, that period is usually related to the so-called Great Aegean Migrations. In them, the leading Balkan communications should have played a key role.
Dragi Mitrevski (Thu,) studied this question.