The Start
During the Famine people in Ireland where desperate to have food, they decided to go to to America to find jobs and earn wages so they could buy/afford more food for themselves and family. The Irish were unfortunately divided during much of the nineteenth century and was therefore helpless in the face of its grave problems. With an overly large population as the result of the Napoleanic Wars, the Irish soon became impoverished. And with the religious prejudice of Protestant Masters to the Catholic Irish, plus political subordination, many had no alternative by to emigrate to the United States for relief. Between 1820 and 1860, the Irish were never less than a third of all immigrants. The British Passenger Acts attempted to deflect the immigration from the British Isles to Canada instead of the U.S., making the fare a cheap 15 shilling compared to the 4 or 5 pound fare to New York. Many Irish soon found it convenient to take the affordable trip to Canada, where they could buy cheap fares to the U.S., or cheaper yet, they could walk across the border. By 1840, the Irish constituted nearly half of all entering immigrants, and New England found it self heavily foreign born. By 1950, the Irish consisted of one fifth of all foreign born in the originally homogenous region.
Liked or Disliked?
The Irish were disliked for a while actually for people believed that was just a state full of lazy, drunken, nonworking people. After a while the Irish were recognized to be hard workers just as any other regular person and after a small unknown speech they were respected a bit more. Over the years now we don't really fuss over these thing. I mean some people do, but I for sure don't.