The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second principal period of the three-age system proposed in 1836 by Christian Jürgensen Thomsen for classifying and studying ancient societies and history.
|Africa, Near East (c. 3300–1200 BC)|
|Late Bronze Age collapse|
|Indian subcontinent (c. 3300–1200 BC)|
|Europe (c. 3200–600 BC)|
|Aegean (Cycladic, Minoan, Mycenaean), Caucasus, Catacomb culture, Srubnaya culture, Bell Beaker culture, Apennine culture, Terramare culture, Unetice culture, Tumulus culture, Urnfield culture, Proto-Villanovan culture, Hallstatt culture, Canegrate culture, Golasecca culture, Atlantic Bronze Age, Bronze Age Britain, Nordic Bronze Age|
|Eurasia and Siberia (c. 2700–700 BC)|
|Poltavka culture, Abashevo culture, Sintashta culture, Andronovo culture, Mezhovskaya culture, Cherkaskul culture|
|East Asia (c. 3100–300 BC)|
|Erlitou, Erligang, Gojoseon, Jomon, Majiayao, Mumun, Qijia, Siwa, Wucheng, Xindian, Yueshi, Xia dynasty, Shang dynasty, Sanxingdui, Zhou dynasty|
|History of technology|
An ancient civilization is deemed to be part of the Bronze Age because it either produced bronze by smelting its own copper and alloying it with tin, arsenic, or other metals, or traded other items for bronze from production areas elsewhere. Bronze was harder and more durable than other metals available at the time, allowing Bronze Age civilizations to gain a technological advantage.
While terrestrial iron is naturally abundant, the higher temperature required for smelting, 1,250 °C (2,280 °F), in addition to the greater difficulty of working with the metal, placed it out of reach of common use until the end of the second millennium BC. Tin's low melting point of 231.9 °C (449.4 °F) and copper's relatively moderate melting point of 1,085 °C (1,985 °F) placed them within the capabilities of the Neolithic pottery kilns, which date back to 6,000 BC and were able to produce temperatures greater than 900 °C (1,650 °F). Copper and tin ores are rare, since there were no tin bronzes in Western Asia before trading in bronze began in the 3rd millennium BC. Worldwide, the Bronze Age generally followed the Neolithic period, with the Chalcolithic serving as a transition.
Bronze Age cultures differed in their development of writing. According to archaeological evidence, cultures in Mesopotamia (cuneiform script) and Egypt (hieroglyphs) developed the earliest practical writing systems.