C, because when the US was neutral during WW2 they did a lend-lease with both of these countries to help support them against Germany,etc
The civil was around Four years long
The Cheronobyl disaster or known as the Cheronobyl accident was a disastrous nuclear accident happened on April 26, 1986 in the Chernobyl Nuclear Power Plant near Pripyat in Northern Ukraine in what was then included in the Ukraine Soviet Socialist Republic of the Sovient Union (USSR).
Explanation:
maybe they used the cliff as a shelter beacause there are some people that haven't a house like us to the family that live in roads in souroundings a homies . they can live their unpermanent.