Recent immigrants from eastern Europe working in Packingtown were most  likely to    
 have the skilled slaughtering jobs in the meat packing industry.    
 be experienced laborers from European industrial sites.    
 live in a mixed household and intermarry with other ethnic groups.    
 * receive the lowest paid jobs in by-product manufacturing.    
    

The most significant development shaping the American economy after the  Civil War was the    
 invention of the cotton gin.    
 growth of the arms industry.    
 * emergence and consolidation of large-scale corporations.    
 growth of the meat packing industry.       
    

Horizontal combinations like the Standard Oil Trust     
 helped to raise workers' wages.    
 * secured control over output and prices.    
 allowed for unlimited competition.    
 served to limit production.    
    


The Haymarket Square incident in 1886     
 helped fill the ranks of the Knights of Labor and the AFL.    
 succeeded in obtaining more support for the eight-hour day.    
 weakened the existing wage system.    
 * weakened labor unions, particularly the Knights of Labor.    
    
  
Unlike the American Federation of Labor, the Knights of Labor     
 * welcomed most workers into its ranks.    
 organized only skilled workers.    
 embraced the American wage system.    
 advocated business unionism.