In West Africa commerce came first and the empires came after

In the Middle East and Egypt, states and steeply unequal societies were long established before trade shifted onto a merchant basis during the first millennium BCE. The western and central Sudan ran the sequence the other way. From the second millennium BCE onward the people there were building towns and forming new classes of merchants and artisans, driven by specialised manufacturing and by the exchange of manufactured goods for the manufactures and raw materials of distant places. Powerful states arrived afterward. Wagadu and the empires like it rose in the early first millennium CE, and what they did was control and protect commercial relations that already existed. That is a different route to complexity from the one the textbooks describe. Commerce generated towns, towns generated artisans, artisans generated wealth, and wealth eventually attracted rulers who wanted a share of it. Any theory that lays out one path from small-scale society to urbanism and the state has a West African problem.

Horizon I on Martinique produced some of the earliest radiocarbon dates in the West Indies for the Cedrosan Saladoid, the pottery-making farming people who moved north into the islands from the South American mainland. Rouse treats the date as the opening of a long demographic change rather than a single landing. The islands were already occupied by Archaic-age bands, smaller groups who fished, gathered and hunted and who did not farm. Over the following centuries the farmers displaced them. Martinique sits in the middle of the Lesser Antilles, on the road running from the mouth of the Orinoco up the arc towards Puerto Rico and Hispaniola, and anything travelling that road passes it. I put a Martinique radiocarbon date on a Haitian timeline because the people the Spanish met on Hispaniola in 1492 came out of this movement. Their arrival is datable, gradual and about two thousand years long. Haiti has an indigenous beginning that predates every European in the story.

Words for iron and for the work of the forge spread eastward across central Africa until they stopped in the west of South Sudan, along what is now the Ethiopian border. They stopped because another body of ironworking terms was coming the other way, southward out of the northern Ethiopian highlands. The two met in eastern South Sudan around the middle of the first millennium BCE. Each set carries its own words for the furnace, the smith and the tools, and each traces back to a different chain of transmission, one African in origin and one reaching the highlands from the Middle East across the Red Sea. Had iron been born once in Anatolia and radiated outward from there, the vocabulary across this whole region would descend from a single root. Instead there are two lexical systems running into each other from opposite directions, thousands of kilometres from where either began. That meeting place is where the single origin theory stops working.

The evidence is indirect and it points to small states in Aïr, in West Africa, by 1000 BCE or earlier. The Nok region of Nigeria appears to have held an early strong state during the first millennium BCE, and its wealth most likely came from trading the metals found in its territory. Nok is famous for something else. Its terracotta heads and figures are among the earliest known figurative sculpture in West Africa and they sit in museums around the world, captioned as art and nothing more. The political economy behind the workshops goes unmentioned. Sculpture of that quality in that quantity implies patrons, and the patrons were living off control of metal and the trade in it. Together with Aïr, the finding puts political complexity in the Sudan belt at 1000 BCE or earlier. That is contemporary with the first Iron Age states around the African Great Lakes, and centuries before the gold trade that made Ghana, Mali and Songhay rich.