Weekly Class AssignmentGo through this week’s PowerPoints carefully and choose three topics towrite about. For each,a)Write the aim question. Then answer the question by summarizingthe main ideas of the PowerPoint. (5 - 7 lines).(What happened? Why? How? Your opinions, reactions?)b)Copy and paste an image from the Powerpoint that helps you betterunderstand the topic.c)Explain how that image helps you better understand the topic.(2 lines)1.a) Aim: How did Cold War tensions decrease during the 1970’s butincrease during the 1980’s?In the 1970’s, Cold War tensions decreased because the U.S. pulledits troops out of Vietnam in 1973, and the conflict ended in 1975when the North Vietnamese took Saigon, now Ho Chi Minh City. Inthe 1980’s, Cold War tensions increased because U.S. PresidentJimmy Carter promised to respond to any Soviet aggression againstAmerican allies in the Middle East.