Respuesta :
Answer:by 1970, competition led employers to either eliminate high-paying manufacturing jobs or else to
Explanation:
the American industry had developed, the quality of American's life had also ... All of the first great American cities were seaports or major river ports.The three largest northern seaports in the early US were Boston, New Yorkand Philadelphia
The manufacturing decline in northern cities because workers needs union for their job protection purpose to avoid employer decisions like cut in wages and allowances, lay-offs and even fired without proper reason.
Why Industry owners don't want unions?
The industry owner don’t want unions because they want to pay low wages, when there is the workload then they put pressure on workers to work late hours without any allowances. Paying an extra allowance and expenses will reduce the profit of the company.
The other reason is that workers will go on strike their demands like increase in wages, cost of living allowances etc. will affect the industry growth.
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