Answer:
The answer is C.
Explanation:
It is tangible boundaries (C) because these are natural/physical limitations. The other answers would mean that they were marked or created by humans.
The Marshall Plan<span> </span><span>was an American initiative to aid </span>Western Europe<span>, in which the </span>United States<span> gave over $13 billion</span><span> in economic support to help rebuild Western European economies after the end of </span>World War II<span>. </span>
Gridlock, or deadlock, is a situation where there is a difficulty to pass laws that please people and their needs.
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That Lincoln was a good person to take care of the Union and the common good of the people. Also that the Proclamation was passed due to strong moral conviction because it was the right thing to do