Which document is closely associated with the symbolism of the American flag?

The Declaration of Independence is closely associated with the symbolism of the American flag because it represents the founding ideals and values of the United States, including freedom, self-governance, and the pursuit of happiness. The flag itself has become a powerful symbol of these ideals, representing the unity and resilience of the nation. When the flag is displayed, it is often seen as a reminder of the principles articulated in the Declaration of Independence, which laid the groundwork for the nation's identity and aspirations. The Declaration signifies the break from tyranny and the establishment of a nation built on democratic values, which is mirrored by the symbolic representation of the flag as an emblem of national pride and unity.