d. The federal government passed strict laws related to union formation and activities.
Explanation:
At the end of the nineteenth century workers began to organize themselves as a means of confronting employers and questioning the situation of the time. The first signs of union between workers appear with the breakdown of factory machines as a form of resistance, a movement known as playfulness. The motivation was the workers' view that they were being replaced by machinery in industries.
In response to the violent activities associated with trade union activism, the federal government passed strict laws related to union training and activities. Among these laws, the government was the law that extended free association to the workers, something that was previously allowed only to the dominant social classes. As a result, trade unions, trade union organizations equivalent to current unions, are being created.
