Many posts have discussed civic culture.
Janell Fetterolf and Stephanie Kramer at Pew:
Americans are less likely than people abroad to feel close to others in their country and community, according to a 2023 Pew Research Center survey of 24 nations. This is especially the case among certain groups of Americans, including younger adults, those with lower incomes and less education, those who identify with or lean toward the Democratic Party, and those who are religiously unaffiliated.