What type of mode of transport had a the most great impact in historical significance (cars, planes, or snowmobiles) and why? pleaseee give me a goood paragraph or something i’ll mark brainliest

Why might collective bargaining fail, causing a union to go on strike? a the union agrees with the boss about wages. b the boss compromises about work hours. c the factory goes out of business, causing the workers to lose their jobs. d the boss refuses to address dangerous working conditions in the factories.