by making tools like swords and helmets
A genuine 1943-S copper (Bronze actually) cent would have a value of $75,000.00 or more. Only 4 have been authenticated.
The wheel
Ancient China spans over 5000 years, which period are we talking about? There was the Bronze age : bronze a mix of copper and tin The Iron age The fire/Guns age: Chinese started use gun powder as early as the 1400's .
They ate them?
Richard Aloysius Flinn has written: 'Copper, brass and bronze castings' 'Fundamentals of metal casting' -- subject(s): Founding
Samuel Noah Kramer has written: 'The Sumerian prefix forms be- and bi- in the time of the earlier princes of Lagas' -- subject(s): Sumerian language, Phonetics, Grammar 'In the world of Sumer' -- subject(s): Sumerians, Sumerian philology, Biography, Sumerologists, Sumeriologists 'Sumerische literarische Texte aus Nippur' -- subject(s): Texts, Sumerian language 'The Sumerians' -- subject(s): Sumerians 'Cradle of civilization' -- subject(s): Civilization, Civilisation 'Sumerian culture and society' -- subject(s): Sources, Sumerians, Civilization, Sumerian literature, History and criticism 'Mythologies of the ancient world' -- subject(s): Mythology, Lending library, Mythologie, Oudheid, Godsdiensten 'Wen ming di yao lan' -- subject(s): Civilization 'Tale s of Sumer' -- subject(s): Sumerian Mythology 'Schooldays' -- subject(s): Texts, Education, Sumerian language
Michael M. Fritz has written: '\\' -- subject(s): Gods, Sumerian, History and criticism, Sumerian Gods, Sumerian poetry
That depends on what motor, the 400 or the 455. The Olds 400's were painted a copper-bronze metallic and the 455's were painted a blue metallic or red on certain models before 1970.
Pure copper, silver and gold has not been used to make general circulation coins for a long time, but for many years, the value of a coin was determined by the metal it was made from and its weight. British copper coins changed to bronze, which included a large percentage of copper, in 1860. British silver coins were gradually debased from 1919/1920 and changed to a copper nickel alloy from 1947. Copper was a relatively cheap and durable metal to make coins from once, but became much too expensive, even as part of a bronze alloy. In the early 1990's, all British bronze coins were subsequently made from copper plated steel. Silver was used to make coins of a higher value and the value of the coin was reflected in the diameter and weight of the coin, but silver also became too expensive.
Jak Yakar has written: 'The religious architecture and art of early Anatolia' 'The later prehistory of Anatolia' -- subject(s): Antiquities, Bronze age, Copper age
Solid copper reacts with solid sulfur to form Copper(I) sulfide. 2Cu(s)+S(s) -> Cu2S(s)
They grew crops.