Eric Walker added The earliest swords so far known in the world, found at Arslantepe Mound in Turkey. The swords, which are dated back to between 3300 and 3000 BCE, are composed of arsenic-copper alloy and among them, three swords were beautifully inlaid with silver [980x980] : ArtefactPorn to Copper Age
Eric Walker added Urban revolution - Wikipedia to Copper Age
Eric Walker added Eridu and the Other Towns in the Ubaid Period - Lecture 4 to Copper Age
Eric Walker added Mesopotamia: The Ubaid Period (5500–4000 B.C.) to Copper Age
Eric Walker added Domestication of the horse - Wikipedia to Copper Age
Eric Walker added Chalcolithic Europe - Wikipedia to Copper Age
Eric Walker added Tell al-'Ubaid - Wikipedia to Copper Age
Eric Walker added Ubaid period - Wikipedia to Copper Age
Eric Walker added Ghassulian - Wikipedia to Ghassulian and Copper Age
Eric Walker added BBC - Earth - Why our ancestors drilled holes in each other's skulls to Archeology and Copper Age
Eric Walker added a number of links to Ghassulian, and added Ghassulian to Copper Age
Eric Walker added Ghassulian and Yamnaya culture and a number of links to Copper Age, and added Copper Age to Archeology, Copper and Society, culture, cultures, civilization and civilizations
Eric Walker added Copper Age and Copper as an antimicrobial agent and a number of links to Copper, and added Copper to Metals and Chemical elements
Eric Walker added a number of topics and Tattoo Machines and Machine Guns: Inking Your Buddies in Combat - The New York Times to Society, culture, cultures, civilization and civilizations, and added Society, culture, cultures, civilization and civilizations to People
Eric Walker added a number of topics and a number of links to Archeology, and added Archeology to Science, engineering, mathematics and the humanities and History, prehistory and geologic time
Eric Walker added a number of links to Yamnaya culture, and added Yamnaya culture to Copper Age