The Pledge of Allegiance, initially written by Francis Bellamy in 1892, underwent various changes before its formal adoption by the U.S. Congress in 1942. Originating as part of a Columbus Day celebration, the pledge sought to foster a sense of national pride and unity, especially among schoolchildren. Over the years, it became a required recitation in schools across the United States, but it lacked official endorsement until the mid-20th century.

During World War II, as the nation grappled with the realities of war and the accompanying call to patriotism, the pledge was seen as a powerful tool to reinforce national identity. By affirming loyalty to the flag and the ideals it represented, Congress aimed to rally citizens and promote a collective spirit needed to face wartime challenges. This context strategically aligned with efforts to communicate America's values against the backdrop of global conflicts.

The official adoption of the Pledge also coincided with an increase in patriotic displays and ceremonies, significantly influencing American culture. The phrase 'under God' was added later in 1954, further altering the pledge's significance. The formal endorsement, however, marked a pivotal moment in the relationship between government, national identity, and American civic life.