The correct answer is D. The reconstruction period.
Explanation
Reconstruction is the name of the period which began in 1865 to 1877 in which the United States was in a phase of reconstruction after the damage caused by the Civil War. During this period arose many movements for the rights of minority communities such as women, African Americans, and temperance. The first of these was the abolition of slavery because with the end of the war slavery was radically abolished and the confederate states were forced to accept the amendments that established the rights of African American slaves ( one of the central issues of a dispute during the Civil War).
Another issue that inspired reforms was the movement for temperance, which established a social movement that was radically against the consumption of alcoholic beverages, for which they promoted laws against the consumption and sale of alcoholic beverages.
Finally, one of the reforms that became relevant during the reconstruction period was the civil rights of women, which demanded equal conditions and employment, educational and social opportunities, generating a series of changes in the laws that would allow their participation in all areas of society including politics.
According to the above, the correct answer is D. The reconstruction period.