What did factory owners do to prevent unions from forming? 1.they paid off union leaders so they would stay away. 2.they had union leaders arrested for no cause. 3.they only hired workers who promised they would not join a union. 4.they used force to end union activities.

(4) They used force to end union activities.

Explanation: Business owners, don't like unions for many reasons. They need a great deal of flexibility in cutting wages, hiring and firing, and adding extra hours of work or trimming back work hours when need be. In fact, wages and salaries are a very big part of their overall costs. And even when business is good, small wage cuts, or holding the line on wages, can lead to higher profits. Business owners are used to being in charge, and they don't want to be hassled by people they have come to think of as mere employees, not as breadwinners for their families or citizens of the same city and country.

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-lavira: )