Your answer will be definitely A. cultural diffusion <span />
George Kennan introduced the idea of containing communism
With the development of technology, a lot of electronic waste has been created and it's polluting the environment because such devices are commonly thrown away and there's so many of them. This is combined with the rise in CO2 emission which required numerous countries to join the battle against the climate change. The ozone layer was also heavily damaged but it has been improving in recent years.
An atomic bomb was dropped on Hiroshima.
