Which of these methods were part of the green revolution’s efforts to increase productivity? select all that apply. breeding superior types of grains use of machinery use of irrigation use of fertilization emphasis on single crops soil conservation avoidance of pesticides

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