There are many differences and similarities between the two routes. The type of goods is just one example. The benefactors of the Silk Road, whereas the Indian Ocean route benefited the Chinese, Indian and Middle East alike.
A concept of federalism where local, state, and national governments interact cooperatively and collectively to solve common problems separately, but more or less equally (dual federalism).
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USA intervened in Korea and Vietnam as war efforts and in Greece and Turkey as coups.
Explanation:
In Turkey the US government aided a coup by the military to overthrow the government which in turn led to a regressive government to be placed in there.
A similar thing happened in Greece when a socialist party was elected into the Country with affiliations or alleged ones with the Soviet Union.
Korea was invaded by the USA in support of the south during the Korean war so as to stop the communist North from taking over all of the Korea under the influence of USSR.
Similar thing happened in Vietnam but it was not successful and Vietnam did fall to the communist army after US departure.
The main reason why america was reluctant to confront fascism and nazism were:
The horrendous memory of ww2 was still fresh and every effort was for avoidance of war.
There was widespread in difference to jewish persecution.
The american population was multi ethinc posing significant challenges to any action that would be taken.