Americans are willing to accept the resolution to a conflict which does not go in their favor. They may not be happy, but if the process was fair, they will accept the verdict and move on.
Nor will their manager, asked to intervene in order to resolve, hold any kind of grudge against either of the conflict parties. American managers know that they are paid to serve as judge in resolving internal disputes.
Historically, the United States has little experience with revanchism. Revanchism, from French revanche or revenge, is a term used since the 1870s to describe the desire to reverse territorial losses by a country after losing a war.
Revanchist politics rely on the identification of a nation, of a people, with a nation-state. This mobilizes ethnic nationalism, claiming territories outside of the state where members of the ethnic group live.