Which policy aimed to ban racial discrimination in federal practices and called for an end to poll taxes?

The policy that aimed to ban racial discrimination in federal practices and called for an end to poll taxes is tied to the broader efforts towards civil rights during the mid-20th century, particularly in the context of the desegregation of the Armed Forces. The desegregation of the military was a significant step toward racial equality and showcased the federal government's commitment to addressing racial discrimination. This initiative was part of President Harry Truman's executive orders, specifically Executive Order 9981, which mandated the integration of the armed forces and aimed to eliminate racial discrimination within the military ranks.

The significance of this policy extended beyond military integration; it set a precedent for civil rights advancements in various sectors of society, influencing subsequent legislation aimed at addressing racial inequalities. The end of discriminatory practices, including poll taxes that were used to disenfranchise African American voters, was part of the broader civil rights movement that emerged in the following decades.

In contrast, the Marshall Plan was focused on European economic recovery post-World War II, and the Fair Deal was an extension of New Deal policies addressing domestic issues, rather than specifically targeting racial discrimination. Containment was a foreign policy strategy aimed at preventing the spread of communism and did not deal directly with racial issues in the United States