B) immigrants from ireland increased by 300%
They positively effected them by creating separation of united forces and widdle out the weaker competitions
James buchanan, Jr. April 23, 1791- June, 1868 was the 15th president of the united states ( 1857-61) serving immediately prior to the American Civil war. he represented Pennsylvania in the United States house of Representatives and later the Senate, then serve as minister to Russia under president Andrew jackson
I think it may have something to do with c or b
