Answer: Arkansas
Explanation: This 1957 event, known as Little Rock Nine, was an attempt by the Governor of Arkansas, Orval Faubus, to prevent nine black students from entering Central High who were enrolled in school, by law, that is, by a Supreme Court ruling abolishes segregation. After Governor Faubus tried to prevent nine black students from entering the school, President Dwight D. Eisenhower intervened, engaging troops of the 101 Airborne Division, which ensured that students still entered school and thus protected law and order.