Answer:
Spartacus, Stamen Grigorov, Ralitsa Vassileva, John Atanasoff, Sylvie Vartan.
Explanation:
<span>It can cause parts of a mountainside to break and fall away.
I hope it helps.</span>
Natural, it is not man made.
It has a big impact on the tides because of gravity
Caucasus
more like 4 countries with the civel war but ok