Egypt and Babylonia.
Some bronzes from the pyramid of Medum analysed by J. H. Gladstone[82] yielded the high percentage of 9.1 of tin, from which we must infer, not only that bronze, but bronze of the finest quality, was already known to the Egyptians of the fourth dynasty, i.e. 2840 B.C. The statuette of Gudea of Lagash (2500 B.C.) claimed as the earliest example of bronze in Babylonia is now known to be pure copper, and though objects from Tello (Lagash) of earlier date contain a mixture of tin, zinc, arsenic and other alloys, the proportion is insignificant. The question of priority must, however, be left open until the relative chronology of Egypt and Babylonia is finally settled, and this is still a much disputed point[83]. Neither would all the difficulties with regard to the origin of bronze be cleared up should Egypt or Babylonia establish her claim to possess the earliest example of the metal, for neither country appears to possess any tin. The nearest deposit known in ancient times would seem to be that of Drangiana, mentioned by Strabo, identified with modern Khorassan[84].
Western Europe.
Strabo and other classical writers also mention the occurrence of tin in the west, in Spain, Portugal and the Cassiterides or tin islands, whose identity has given rise to so much speculation[85], but "though in after times Egypt drew her tin from Europe it would be bold indeed to suppose that she did so [in 3000 B.C.] and still bolder to maintain that she learned from northern people how to make the alloy called bronze[86]." Apart from the indigenous Egyptian origin maintained by Elliot Smith (above) the hypothesis offering fewest difficulties is that the earliest bronze is to be traced to the region of Elam, and that the knowledge spread from S. Chaldaea (Elam-Sumer) to S. Egypt in the third millennium B.C.[87]
The Aegean.
There seems to be little doubt that the Aegean was the centre of dispersal for the new metals throughout the Mediterranean area, and copper ingots have been found at various points of the Mediterranean, marked with Cretan signs[88]. Bronze was known in Crete before 2000 B.C. for a bronze dagger and spear head were found at Hagios Onuphrios, near Phaistos, with seals resembling those of the sixth to eleventh dynasties[89].
From the eastern Mediterranean the knowledge spread during the second millennium along the ordinary trade routes which had long been in use. The mineral ores of Spain were exploited in pre-Mycenean times and probably contributed in no small measure to the industrial development of southern Europe. From tribe to tribe, along the Atlantic coasts the traffic in minerals reached the British Isles, where the rich ores were discovered which, in their turn, supplied the markets of the north, the west and the south.
Ireland.
Even Ireland was not left untouched by Aegean influence, which reached it, according to G. Coffey[90], by way of the Danube and the Elbe, and thence by way of Scandinavia, though this is a matter on which there is much difference of opinion. Ireland's richness in gold during the Bronze Age made her "a kind of El Dorado of the western world," and the discovery of a gold torc found by Schliemann in the royal treasury in the second city of Troy raises the question as to whether the model of the torc was imported into Ireland from the south[90], or whether (which J. Déchelette[91] regards as less probable) there was already an exportation of Irish gold to the eastern Mediterranean in pre-Mycenean times.
Chronology of the Copper and Bronze Ages.