Answer:
The Great Railroad Strike of 1877, sometimes referred to as the Great Upheaval, began on July 14 in Martinsburg, West Virginia, after the Baltimore and Ohio Railroad (B&O) cut wages for the third time in a year.
The areas which received development during the Carolingian Renaissance was the increase of literature and writing, the arts, architecture, jurisprudence (the study of theory and law), liturgical reforms (Church reforms) and scriptural (Bible) studies.
Answer: I believe A is the answer