How did francisco franco use mass violence against his opponents in spain?

Through a secret and very violent police.

Explanation:

The Political-Social Brigade (BPS), whose official name was the Social Investigation Brigade (BSI), was the secret police that existed in Spain during the dictatorship of Francisco Franco, in charge of persecuting and repressing all movements of the opposition to the Franco regime. . Organically constituted a section of the General Police Corps (CGP). After the death of Francisco Franco, during the years of transition the brigade was restructured and replaced by the Central Information Brigade (BCI). Among the anti-Franco opposition was commonly known as "The Social", "The Secret" or "The Brigade."

the reform movements that arose during the antebellum period in america focused on specific issues: temperance, abolishing imprisonment for debt, pacifism, antislavery, abolishing capital punishment, amelioration of prison conditions (with prison's purpose reconceived as rehabilitation rather than punishment), the humane treatment of animals, the humane and just treatment of native americans, the establishment of public institutions for the care of the destitute, orphans, blind, and mentally ill, the establishment of public schools, the abolition of tobacco use, vegetarianism, health reform, homeopathic medicine, woman's rights (including, at first, especially the establishment of a woman's right to own property apart from her husband and her right to sue for divorce), and the amelioration of labor conditions (including higher pay, the right to form unions, the right to strike, and the demand for limits on the number of work hours, and safe working conditions).

explanation:

i believe the correct answer is b.