The developments under charlemagne are sometimes referred to as the "carolingian renaissance." which of the following describes those changes?

an increase in literacy, advancement of the arts, and improvements in the legal system
a revival of polytheism, roman government, and roman construction
an increase in the authority of the church, the state, and the serfs
monarchs acquired the power to name bishops, dukes, and knights.

An increase in literacy, advancement of the arts, and improvements in the legal system

The Carolingian Renaissance was a significant renewal of Western culture during the Middle Ages, after the Charlemagne's order to bring the greatest scholars of his time to his court and to teach a small group, called the intellectuals. In this Renaissance, there was a new uplift in the fields of art, literacy, architecture, philosophical writings, and quality of church music that still remains nowadays.

Likewise, as a ruler who had supreme jurisdiction in judicial matters, Charlemagne made legislation, led the army, and protected both the church and the poor, and attempted to organize the kingdom, church, and nobility around him to better control it.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation:

was a long, primarily nonviolent series of events to bring full civil rights and equality under the law to all americans. the era has had a lasting impact on united states society, in its tactics, the increased social and legal acceptance of civil rights, and in its exposure of the prevalence and cost of racism. in the south violence and fraud in southern elections from 1868 to 1876, which had reduced black voter turnout and enabled southern white democrats to regain power in state legislatures across the south