Final answer:
The Eleventh Amendment addresses the issue of persons being treated unfairly in another state's court by prohibiting interstate lawsuits against states.
Step-by-step explanation:
The feature with the problem of persons being treated unfairly in another state's court was addressed by the Eleventh Amendment in the United States Constitution.
This amendment was a reaction to the Supreme Court decision in Chisholm v. Georgia, where the court had initially allowed citizens to sue another state in federal court, leading to concerns about fair treatment and impartial justice.
The Eleventh Amendment, ratified in 1795, essentially prohibited such interstate lawsuits, by stating that the Judicial power of the United States shall not extend to suits brought against one of the United States by citizens of another state, thereby preventing the federal courts from hearing these cases.