The North Atlantic Treaty Organization was created in 1949 by the United States, Canada, and several Western European nations to provide collective security against the Soviet Union. NATO was the first peacetime military alliance the United States entered into outside of the Western Hemisphere.
Answer:
It is the USA's branch of government that makes the laws of the country.
Political - British taking over Northern Ireland.
The majority of Northern Ireland's population were unionists, who wanted to remain within the United Kingdom. (The Norman invasion of the late 12th century )
Economic - Failure of potato crop. (The Great Famine)
Religious - discrimination against the Catholic/nationalist minority by the Protestant/unionist government and police force.
Answer : Mainly because economic problems. Since potatoes were no longer available in Ireland, the Irish would starve to death since potatoes were their main resource as food.
This brings to Irish migration to the US because it offered low paying jobs for immigrants. In the end, the Irish had minimum money and enough food for themselves in America, unlike in Ireland.
Federal troops removed and racist pracices eliminated in the south