It led to a period of large-scale emigration out of Ireland ( apex) XD :)
D I took this test and I believe this was it
Answer:
the noble experiment
Explanation: It is no mistake that President Herbert Hoover's 1928 description of Prohibition as "a great social and economic experiment, noble in motive and far-reaching in purpose" entered the popular lexicon as "the noble experiment." It was unfortunate for the entire nation that the experiment failed as miserably as it did.