Religions with scriptures and missionaries appear along the trade routes

During the first millennium BCE a new kind of religion took shape, or more precisely a new kind of social ideology backed by religion and carried by teachers and proselytisers. Zoroastrianism, Buddhism, Daoism, Confucianism and Judaism belong to the first wave. Christianity, Manicheism and Hinduism follow in the first millennium CE, and Islam arrives in the seventh century. Ehret's wording moves the question from what these systems believed to how they travelled. Written scripture was no novelty, since Egypt had produced sacred texts for two thousand years already, and monotheism was no novelty either. The new thing was scriptural authority combined with organised missionary work, which allowed a whole social and cultural system to be exported rather than a set of beliefs alone. The infrastructure it used was commercial. The roads built to move gold, copper and silk were the roads along which teachers walked and converts were made. Africans were among the architects of the tradition that would travel furthest.

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.

The Council of Nicaea met in 325 CE to settle what Christians were required to believe about the nature of Christ. The argument was carried by Alexander, the Egyptian patriarch of Alexandria, and by his student Athanasius, who between them defeated the position that Christ was a created being. Out of the council came the doctrine of the Trinity and the statement of belief still recited as the Nicene Creed. Every later century of Christian theology in Europe was built on that foundation, and it was fixed in place by two men from Egypt. The other decisive figure of the period was also African. Augustine was born in the fourth century at Hippo, in what is now Algeria, of Amazigh descent, and his writing on sin, grace, predestination and the standing of the church shaped Catholic doctrine for sixteen hundred years and handed the Protestant reformers their arguments as well. He learned his trade inside an African intellectual tradition that had already produced Tertullian and Cyprian.

Herodotus wrote down what Carthaginians told Greek listeners about a coast beyond the Straits of Gibraltar. The ships would land, the crews would set their wares out in a row along the shore and raise smoke. People living there came down when they saw it, left gold beside the goods and withdrew. The Carthaginians came ashore and looked. If the gold matched the value they took it and sailed; if it did not they went back aboard and waited while more was added. Neither side touched what the other had put down until the exchange was settled. The same silent barter appears in much later accounts of the gold trade in the West African interior. The metal most likely came from the alluvial fields of Galam and Bambuk on the upper Niger and Senegal. This is among the earliest written notices of West African gold reaching the outside world.