It was ratified on "March 1, 1781", they had to be replaced by the Constitution post the "Constitutional Convention in 1787". The constitution came to effect by replacing the articles in 1789, as the articles had a number of weaknesses as they gave states too much power, specifically more than the federal government
Ireland. The Irish potato famine brought Irish (and German at the time seeking religious and political freedom) which immigrated to America, threatening the jobs Americans had due to their low wage.
