"excavating Earth’s surface to reach veins of clean coal" would be the best option because this is done fairly close to the top of the Earth's surface. It's a controversial and dangerous practice.
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By October 1990, Germany was reunified, triggering the swift collapse of the other East European regimes. People celebrating the fall of the Berlin Wall. Thirteen months later, on December 25, 1991, Gorbachev resigned and the Union of Soviet Socialist Republics dissolved. reunification caused by gorbachev, resulted in the iron curtain countries to gain independence.
Explanation:
I don’t know mane I just need help . And i think it exponentially increased
Is this from vietnam if sao they were under heavy fire