The soviet union and the united states believed in two very different economic systems what were the names of each?

Why is ivan iv known as “ivan the terrible”?

1.     in what kind of government does a small group have a firm control over a country?  

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