Beginning in the early 17th century, the City of London shipped their unwanted excess population, including vagrant children, to the American colonies – especially the Colony of Virginia, the Province of Maryland, and the Province of Pennsylvania – where they became not apprentices, as the children had been told, but indentured servants, especially working in the fields. Even before the beginning of the Atlantic slave trade brought Africans to the British colonies in 1619, this influx of "transported" English, Welsh, Scots, and Irish was a crucial part of the American workforce. The Virginia Company also imported boatloads of poor women to be sold as brides. The numbers of these all-but-slaves was significant: by the middle of the 17th century, at a time when the population of Virginia was 11,000, only 300 were Africans, who were outnumbered by English, Irish and Scots indentured servants. In New England, one-fifth of the Puritans were indentured servants. More indentured servants were sent to the colonies as a result of insurrections in Ireland. Oliver Cromwell sent hundreds of Irish Catholics to British North America during the Irish Confederate Wars (1641–1653).