Is an archive written by a chinese prince about dynasties before him considered a primary source or a secondary source?

N1947, the united nations create a country

He scientific revolution encouraged scientists and philosophers to

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