1) Oil prices and economic inefficiency.
Yamani, declared that Saudi Arabia was quitting the agreement on oil production restraint, and started to boost its share in the oil market. After this, Saudi Arabia increased oil production by 5.5 fold, and oil prices dropped by 6.1 fold,
2) ethnic tensions
3) Gorbachev’s reforms
Two types of boomers
Leading-Edge Baby Boomers: 1946-1955
Late boomers/Trailing Edge boomers:1956-1964
Solzhenitsyn's One Day in the Life of Ivan Denisovich<span> which was published in 1962</span><span> created a sensation because his novel portrays a grim detail of life in Stalinist concentration camp---a life which he had been condemned and an indictment of the Stalinist past.</span><span> </span>
The answer is The New Deal
(Advertisement for radios, published in 1923).