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The steam engine took place in the industrial revolution, which began in the second half of the eighteenth century in the Kingdom of Great Britain.
This significantly transformed the economy, technology, agriculture and trade, because with the arrival of the steam engine the work was industrialized and mechanized
The Cuban Missile Crisis, also known as the Caribbean Crisis was a 13-day confrontation between the United States and the Soviet Union concerning American ballistic missile deployment in Italy and Turkey with consequent Soviet ballistic missile deployment in Cuba.
D, By deploying military forces to break up the protests.
Lack of experience with people and life in general. Same reason they put age restrictions on the president. Because for a job like guiding the country, you want someone that knows or has had experience in different areas.