The image shows Russian and American tanks facing off at the East-West Berlin border on October 28, 1961

Why were relations between Russia and the United
States tense in Berlin in 1961?

A. The Berlin Wall had created new restrictions on
movement

B. Germans had banned Western influence in East
Berlin

C. US ambassadors were refusing to cross the border

D. Khrushchev and Kennedy had hed a failed save
conference.

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