Global history did not begin with the European voyages of discovery. It did not start in the nineteenth century with a great divergence between the West and China. It is not synonymous with a globalization narrative. If we are to realise the full potential of a global approach to history then we must extend our chronologies and geographies. Bringing together historians and archaeologists of Africa, the Americas and Eurasia, this Supplement focuses on the abundant evidence for behaviour and interaction on a global scale in the millennium before 1500.