The way in which Back to the Future Il demonstrates the concept of historical contingency is b. Marty and Doc's single action of traveling to the future led to a chain of events that ended up creating an alternate 1985 Hill Valley.
This refers to the chance-influenced events that have substantial long-term effects.
Hence, we can see that The way in which Back to the Future Il demonstrates the concept of historical contingency is b. Marty and Doc's single action of traveling to the future led to a chain of events that ended up creating an alternate 1985 Hill Valley.
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