Iron Age

The Iron Age is the third principal division in the three-age system developed by Danish archaeologist Christian Jürgensen Thomsen in the early 19th century, following the Stone Age and Bronze Age. It denotes the period in any given region when iron smelting and forging became widespread enough to displace bronze as the primary material for cutting tools, agricultural implements, and weapons.

The Iron Age did not begin simultaneously everywhere. In Anatolia and the Near East, ironworking expanded notably after roughly 1200 BCE, following the collapse of several Late Bronze Age polities (including the Hittite state). In Greece, the period conventionally spans from around 1200 BCE through the rise of the Archaic period in the 8th century BCE, encompassing what is sometimes called the Greek Dark Ages. In Central and Western Europe, archaeologists distinguish the Hallstatt culture (roughly 800–450 BCE) and the subsequent La Tène culture (roughly 450 BCE until Roman conquest). In South Asia, iron use is associated with the Painted Grey Ware and Northern Black Polished Ware horizons. In Sub-Saharan Africa, ironworking developed without a preceding bronze phase in several regions, including at Nok (in present-day Nigeria) from roughly the first millennium BCE.

The transition involved more than a change in metal. Iron ore is far more abundant than the tin and copper required for bronze, which over time democratized access to metal tools, expanded agricultural productivity, and reshaped military organization. The period is also associated with the spread of alphabetic writing systems, the emergence of early states such as Assyria, Urartu, and the Greek poleis, and intensified Mediterranean trade.

The Iron Age has no single end date; it terminates in each region with the arrival of substantial written historical records or imperial incorporation. In Britain, for example, it is typically held to conclude with the Roman conquest beginning in 43 CE.