Which of the following statements does not explain why it took so many court cases to fully integrate Oklahoma’s schools? A. Segregation policies had been practiced for generations, so people were reluctant to enact difficult changes.

B. Each court case dealt with a specific segregationist policy, which encouraged integration opponents to keep parts of Jim Crow laws intact.

C. So many institutions and practices were segregated that lawyers were forced to submit many cases to tear down all of them.

D. So many African American Oklahomans sued segregated state institutions that the US Supreme Court was overwhelmed with cases.