Why were these people called carpetbaggers?

The term carpetbagger, used exclusively as a pejorative term, originated from the carpet bags (a form of cheap luggage made from carpet fabric) which many of these newcomers carried. The term came to be associated with opportunism and exploitation by outsiders.

Explanation:

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modern american cars are not available due to trade restrictions

answer; (b) knowledge based summaries of our beliefs and feeling about the self in particular domains;