 Complete the following phrase:  People of Irish descent form the largest ethnic group in the city of Philadelphia and its surrounding counties. The Irish have lived in Philadelphia since the pre-American Revolution period. Irishmen had participated in pro-Revolutionary activities in Philadelphia during the Revolutionary War. Like many American cities in the 19th century, Philadelphia, which was once a Quaker stronghold, changed dramatically with the influx of European immigrants. The first major influx of Irish came in 1844 from rural areas, spurred by the 