Martin luther king jr's i have a dream speech from the march on washington in 1963 incorporates concepts from which three important american documents?

Q: Martin Luther King Jr's I Have A Dream speech from the March on Washington in 1963 incorporates concepts from which three important American documents?

A: The Declaration of Independence
     The Emancipation Proclamation
     The Bible
*This is what I gathered, there may be more or maybe different answers but this is what I found.

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