Which statement best describes the contributions of harriet tubman during the civil war?
tubman was an abolitionist who served the union in the 54th massachusetts regiment.
tubman was an abolitionist who worked as a spy for the union army to the war effort.
tubman was an abolitionist who established the tuskegee airmen flying squadron.
tubman was an abolitionist who encouraged the union to permit african americans to enlist.

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