I need help on this one, it’s due at 11! Why do most people consider Lee’s surrender to grant to be the end of the civil war when in fact there were 2 other surrenders that occurred later in April and in late May?

Ahistorian has discovered a letter written by an early roman emperor. she translates the letter and discovers that it contains orders to a general before a battle. she works to determine when the letter was written to figure out which battle the letter references.the historian in the passage is most clearly demonstrating which historical thinking skill? a. identifying causes and historical contextb. thinking chronologicallyc. making and evaluating arguments and interpretationsd. analyzing historical sources