Based upon the text, please define “sectionalism

restriction of interest to a narrow sphere; undue concern with local interests or petty distinctions at the expense of general well-being.

"the rise of democracy, capitalism, and sectionalism"

the first forms of writing came from them in the form of pictographs around 3100 bc.

in the 1950s, country music came into its own before rock-n-roll took off in the 60s while jazz and classical music continued to innovate