Filling in the gaps in the slave trade

Geneticists, archaeologists and historians are joining forces to investigate the history of transatlantic slavery, in a €4.3-million (US$5.8-million) project launched today. The researchers say that the project is a unique opportunity to improve our knowledge of the slave trade, but warn that some of their results might be “uncomfortable”.

Between the sixteenth and nineteenth centuries, millions of people from west and central Africa were captured and shipped across the Atlantic by European slave traders to a life of forced labour in the Americas. The subject has been well studied by historians, but one of the coordinators of the project, geneticist Hannes Schroeder of the Center for GeoGenetics at the Natural History Museum of Denmark in Copenhagen, says that there are still “large gaps in our knowledge” regarding the origins of the people captured as slaves, for instance, and how the slave trade operated.

“The historical records are fragmentary,” he says. “For example, they tend to mention just the port of export, rather than the ethnic or geographical origin of the person. The idea is that by bringing in genetics, we get a different view.”...