How do the united states work together to preserve the union

States may also join with other states in regional groups to work together to reduce water and air pollution. The states also work together with the federal government. Federal and state governments often work together to share the costs of providing a wide range of social services to the American people.

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my cultural heritage consists of irish, german, native american, and others.

thurgood marshall

explanation: in 1954, thurgood marshall and a team of naacp attorneys won brown v. board of education of topeka, kansas. in this landmark decision, the supreme court held that segregation in public education violated the equal protection clause of the fourteenth amendment.