Ancient Greece and wine help satisfy demand. Wine historians have theorized that the Greeks may have introduced viticulture to Spain and Portugal, but competing theories suggest that the Phoenicians probably reached those areas first. The grape clusters, vines and wine cups that adorn Greek coins from classical times bear witness to the importance of wine to the ancient Greek economy. With every major trading partner, from the Crimea, Egypt, Scythia, Etruria and beyond, the Greeks traded their knowledge of viticulture and winemaking, as well the fruits of their own production. Millions of amphora pieces bearing the unique seals of various city-states and Aegean islands
Names of the Greeks Myceneans or Mycenean-Achaeans by historians, entered present-day Greece sometime in the Neolithic era or the Bronze Age. Homer refers to "Achaeans" as the dominant tribe during the Trojan war period usually dated to the 12th–11th centuries BC, using ""Hellenes"" to describe a relatively small tribe in Thessaly. The Dorians, an important Greek-speaking group appeared roughly at that time. According to the Greek tradition, the "Graeci" ("Greeks", , "Graikoi") were renamed "Hellenes" probably with the establishment of the Great Amphictyonic League after the Trojan war. When the Romans first encountered Greek colonists in southern Italy, they used the name Graeci for