Final answer:
President Eisenhower federalized the Arkansas National Guard and sent in the 101st Airborne Division to enforce the court order for integration at Central High School.
Step-by-step explanation:
In response to the situation described in the passage, President Dwight D. Eisenhower reacted by federalizing the Arkansas National Guard and sending in the 101st Airborne Division to enforce the court order mandating integration at Little Rock's Central High School. This was done to ensure that federal law was followed and that the rights of the African American students, known as the Little Rock Nine, were protected. The presence of federal troops at the school helped the students attend classes and made it clear that open defiance of federal law would not be tolerated. Despite the firm stance, it would take many years before public schools were fully integrated.