7. what was an important result of the union victory at vicksburg? a. the union was now in charge of the atlantic coastline. b. the union stopped a confederate attack into the north. c. the south quickly gave up after vicksburg. d. the union now controlled the mississippi river.

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