How did the leadership of Samuel Gompers from the American Federation of Labor differ from Terence Powderly of the Knights of Labor? Gompers believed anyone should be allowed to join a union. Gompers preferred negotiations rather than strikes. Gompers often involved the union in politics. Gompers focused on common issues to unify the members.

How should the syntax in this sentence be changed, if at all? the scientists spent years analyzing the results of numerous medical studies meant to identify the cause of the disease. no change the scientists spent years looking at the results of a variety of different medical studies meant to locate the cause of the disease. the scientists spent years reviewing medical study results to find the cause of the disease. the scientists spent years studying the results of many medical studies in order to uncover the cause of the disease.