At the conclusion of the spanish-american war, had gained an empire and new stature in world affairs.

The correct answer is - the United States.

With the victory in the Spanish-American War, the United States managed to promote themselves as an imperial power, and also as a country that is strong, is on the rise, and should be well respected and feared.

The United States managed to gain a lot of new territory, Texas, New Mexico, Arizona, Nevada, California, Utah, as well as the entirety of Colorado, Wyoming, and Kansas. This increased the territory of the United States by far, it managed to become the dominant power in the region, it gained much more coastline on the Pacific, as well as on the Gulf of Mexico. Lot of natural resources were also gained as these territories are rich in numerous natural resources, an that helped to boost the economy and development even further.

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:

the answer would be c