Before the dawn of the Mycenaean civilization, in the early bronze age, longdistance trading was already under way across northern Europe, from the Atlantic seaboard to central Germany. In the middle bronze age, developing north-to-south trade links brought Greece into closer contact with that northern world. Amber from Denmark was traded south to the upper Danube valley. The Carpathian bronze-working communities also became more active, establishing trade links down the lower Danube to the Black Sea, and from there it was possible for central European groups to make contact with Mycenae, by this time a dynamically evolving culture feeding off contacts with other cultures. A gold dagger found in Romania shows the influence of Mycenae in its hilt design. Then amber necklaces complete with spacer beads appear in early Mycenaean royal graves; Mycenae was ready to tap the European hinterland.