Castro became worried that the USA might launch another invasion. So he made an alliance with the USSR.The soviets bought sugar off Cuba so that Cuba didnt have to trade with Kennedy. Also Khruschev put a nuclear weapons site in Cuba, this meant that they were now within range of the US therefore giving them an advantage in the arms race.
I would say true because this was the time of "boom", as we called it.
A lot of mass production and all that ( More making cars, food, and lots more )
After that, however, was around the Great Depression, when lot's of things and people were lost.
Glad I could help, and good luck!
The human activity most widely viewed as changing the planet is the burning of fossil fuels. ... to melt, threatening water supplies for hundreds of millions of people. ... and phosphorus to the biosphere than would occur naturally. ... compounds that can remain active in the environment for thousands of years .
hope this helps u