维京人通过在利菲河上航行，能够分出不同的地区。然后维京人开始建立贸易中心，从9世纪中叶开始发展到爱尔兰海岸附近的城镇和城市。正是在这些地方，爱尔兰的第一枚硬币被铸造，交易商品和奴隶。经济联系建立在更广阔的维京世界，例如约克郡的约克郡，横跨欧洲和近东。公元840年之后，维京人在整个爱尔兰的战略地点都有几个基地。在902年，由于爱尔兰联盟，维京人被暂时驱逐出都柏林，但是他们很快就回来了。都柏林的北欧海盗统治者卷入了爱尔兰王国之间的政治冲突，在1014年，都柏林的维京人与莱因斯特结盟，对抗蒙斯特。维京人和莱因斯特人在克伦塔夫战役中被击败，这被认为是爱尔兰维京势力的终结。然而，在盎格鲁诺曼人入侵1169年之前，维京人仍然在爱尔兰生活中扮演着积极的角色。
美国宾夕法尼亚论文代写:建立贸易中心
The Vikings were able to branch off into different areas in the country by sailing through the river Liffey. The Vikings then began to build trading centres that developed into towns and cities around the Irish coast from the middle of the 9th century. It was in these places that the first coins in Ireland were minted as well as trading goods and slaves. Economic links were established with the wider Viking world for example the town of Jorvik (York) in England, across Europe and the Near East. After 840AD, Vikings had several bases in strategic locations throughout Ireland. In 902 the Vikings were temporarily expelled from Dublin due to an Irish alliance, however they soon returned. The Viking rulers of Dublin became involved with the political conflicts between Irish kingdoms which reached its pinnacle when in 1014 the Vikings of Dublin allied with Leinster in their battle for supremacy against Munster. The Vikings and Leinstermen were defeated in the Battle of Clontarf which is seen as the end of Viking power in Ireland. However Vikings still played an active role in Irish life until the Anglo Norman invasion of 1169.
