Answer: By entering World War 1 on the Allied countries
People would lose oxygen and animals would go extinct.
One of the most significant changes that Gorbachev made to the Soviet economy was that he was the first leader to really try to ease the planned economy and let some market forces in.
Answer:
They sought to make alliances with the native peoples instead of subjugating them.
Explanation:
This colonization would drive out the natives and create conflict between the European powers. While the Spanish, French, Portuguese, Dutch, and English were the main players in European colonization of the New World, they were not the only ones.
The dropping of the atomic bomb on Hiroshima and Nagasaki (though they were already in line to surrender before we did that)