One of the most significant challenges is building an airplane had to do with "propulsion", since the technology that allowed motors to have enough energy to lift an airplane into the sky with a passenger wasn't available for most of history.
Answer:
D) Slaveholders enjoyed a privileged lifestyle because of slavery.
Explanation:
Answer:
Explanation: 1) Stalin became the dictator of the USSR.-late 1920's
2) Khrushchev became the general Secretary - September 1953
3) De-Stalinization began- 1953 after Khrushchev achieved power
3) Sputnik was launched- May 1957
4 Yuri Gagarin became the first man in space-April 12, 1961
Answer:
Correct answer is C. The resignation of Mikhail Gorbachev
Explanation:
Option A is not correct as this treaties are important for the limitation of weapon arsenal, but didn't lead to end of Cold War.
B is not correct as the defeat of US in this war showed that Communism is still alive.
C is correct as after his removal Soviet Union was dissolved, which led to end of Cold war.
D is not correct as China was opened towards the west even during the Cold war.