Final answer:
The NAACP's strategy of using the courts and litigation was effective in furthering civil rights work because it challenged segregationist practices, brought attention to injustices, and led to legal victories that made Southern states take the concept of "separate but equal" more seriously.
Step-by-step explanation:
The NAACP strategy of using the courts and litigation was effective in furthering civil rights work for several reasons.
First, by bringing test cases to court that challenged segregationist practices, the NAACP was able to bring attention to the injustices of segregation and discrimination. Second, their legal victories, such as the Supreme Court ruling in 1937 that struck down Missouri's denial of equal protection to black students, made Southern states take the concept of "separate but equal" more seriously.
Finally, the NAACP's legal efforts forced Southern states to provide funds for black colleges, which became important centers for political action.