The Achaeans overran Greece in around 1600 BC. This period is also known as the Mycenaean period, which lasted until around 1100 BC. The Achaeans were influential in the development of Greek civilization during this time.
The Achaeans, a group of early Greeks, are believed to have overrun Greece in around 1100 BC. This was part of a wave of migrations that swept through the region at the time, bringing with it the beginnings of the Greek civilization.