Why Vietnamese independence at Versailles changes the whole treaty

If Ho Chi Minh gained Vietnamese independence at Versailles, how would American history and culture in the 1960s and 1970s change?

The answer stops short of predicting those decades because independence through Versailles would change colonial settlements and international relations long before then.

Granting Ho Chi Minh Vietnamese independence at Versailles would introduce general decolonisation into a settlement that was not designed to resolve colonial rule that way. The answer asks whether similar claims would then apply to India, Burma, Malaya, Singapore, the Dutch East Indies, and the Philippines. Cambodia and Laos would need an explicit settlement: independence, inclusion with Vietnam, or continued French control are separate possibilities. Japan's demand for racial equality and the League of Nations mandate system would also become part of the changed negotiations. Former German colonies might become self-governing instead of mandates, or imperial powers might refuse to sign. These intervening changes prevent a confident projection to American culture in the 1960s and 1970s.