For 10 points - identify this organization founded to unite workers of different nations, led by Karl Marx.
Important members of this organization's General Council included Peter Fox and Johann George Eccarius.  English Positivist Edward Spencer Beesly chaired the meeting at which it was founded, held in St. Martin's Hall, London in 1864.  It encompassed a number of different ideologies such as French Blanquists and English Chartists but was dealt a serious blow at the 1872 Hague Congress in which its primary leader affected a split with the anarchists by expelling Mikhail Bakunin.  For 10 points - identify this organization founded to unite workers of different nations, led by Karl Marx.
Important members of this organization's General Council included Peter Fox and Johann George Eccarius.  
The First International or International Workingmen's Association