Final answer:
In 1956, Southern congressmen issued the "Southern Manifesto" opposing the Brown v. Board of Education decision and urging resistance to integration. In 1957, Arkansas governor Orval Faubus mobilized the National Guard to block Black students from entering Little Rock Central High School.
Step-by-step explanation:
In 1956, a bloc of southern congressmen issued the "Southern Manifesto", which opposed the decision in Brown v. Board of Education. The manifesto urged southern states to resist integration. In 1957, Arkansas governor Orval Faubus attracted national attention for his opposition to the integration of Little Rock Central High School. He mobilized the state National Guard to prevent Black students from entering the school.