Charles Darwin was the British naturalist that used thousands of plant and animal specimens in the Galapagos islands.
Most of the time it would be beachhead, but it can also be drop-offs, cliffs, etc
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President truman stated that the world was facing aserious threat of communism (socialism) which was eating up the most European countries.
It should be noted that socialism began in USSR( Russia) as a means of making properties and private owned properties to be owned by the community inorder to reduce the wide gap between the rich and the poor.
Mikhail Gorbachev was D) the leader of the Soviet Union at the end of the Cold War