The development of a system of mass production in manufacturing meant that A. machines rapidly produced large amounts of products.
B. products were handmade.
C. products were made in foreign countries.
D. individuals slowly made small amounts of products.

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