Regionalism was the primarily American movements. Hence, option C is correct.
Regionalism is a strong sense of pride or devotion that people have for their own area, typically accompanied by a desire to self-govern.
Regionalism is the political emphasis on a single region of a nation. One example of regionalism in the United States is the perception that Southerners and New Englanders are different from one another.
Thus, option C is correct.
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