Major events in the peopling of the British Isles. a, The routes taken by the first settlers after the last ice age. b, Britain during the period of Roman rule. c, The regions of ancient British, Irish and Saxon control. d, The migrations of Norse and Danish Vikings. The main regions of Norse Viking (light brown) and Danish Viking (light blue) settlement are shown.
In 837, Vikings attacked on the Boyne and Liffey rivers on the east coast and on the Shannon on the west. In 840 the Vikings spent a year on Lough Neagh pillaging, amongst others, the monastery of Armagh. Many of the scholars and monks of Louth monastery were captured and sold into slavery. In 841 they set up fortified camps at Annagassan (county Louth) and Dubhlinn (present day Dublin). Clonmacnoise, Birr and Clonfert were pillaged.
A 3,000-year-old flint knife complete with its wooden handle has been uncovered in southern Zealand, Denmark. The knife dates to the Bronze Age, but when the supply of metal could not keep up with demand, artisans crafted tools from old materials with new designs.