What technology made steel the main building material of american cities and industry?

Persons or group opposing or hostile to another person or group the definition word is

George works in a factory and is a member of the labor union. he thinks his wages are low for the work that he does, so he tells the union representative that his employer should increase his wages. the representative asks the other workers if they feel the same, and they all agree. the following week, the union representative met with the factory owner regarding an increase in wages, and the employer agred to it. what strategy did the union use to get the owner to agree to increase wages? a individual bargaining b. threaten to go on a strike c. collective bargaining d. threaten to quit their jobs e filing a petition to the government reset next ntum. all rights reserved.

Which was a major effect of the canal craze of the early 19th century