Truman Doctrine - The Truman Doctrine was a law proposed by President Harry Truman in 1947 and finalized in 1948. This law was meant to help the countries of Greece and Turkey. The US was concerned about these two countries falling under the control of the communist Soviet Union. To ensure this didn't happen, the US gave $400 million in economic aid to stabilize each countries economy.
Marshall Plan- This plan would help Europe recover after World War II. This plan gave $13 billion in economic aid to countries like Great Britain, France, and West Germany. Ultimately, the goal was to ensure that none of these countries fell under the control of the communist Soviet Union.
Korean War- After adopting a policy of containment (aka stopping the spread of communism) the US helped South Korea in the Korean War. The US involvement was based out of fear that the South Korea would fall under the control of the communist North Korean government. The US mission in stopping the spread of communism was successful, as South Korea remained a capitalist country.
The unit is called Ecosystem.
Ecological units comprise concepts such as population, community and ecosystem.
<em>An ecosystem</em> is a community of plans and animals interacting with each other in an particular area. They also interact with their non-living environments (water, earth, sun, soil, climate and atmosphere).
The robins are in relationship with the earthworms because the robins eat them in order to survive and as a part of the food chain. The food chain is a linear sequence of organism through which nutrients and energy pass as one organism eats another. Ecosystems consist of creatures that mutually benefit from each other.
It is letter C since Rome was rocking it's power until they were destroyed later on.
