Answer:
The Bible
Abraham Lincoln the Emancipation Proclamation
Step-by-step explanation:
The speech I have a dream was given by Martin Luther King Jr. this speech is known as one of the greatest speeches of all time. he delivered his speech during the March on Washington in 1963 over the Lincoln Memorial, to honor Abraham Lincoln's Emancipation Proclamation.
Martin Luther King Jr. also referred to the Constitution and its framers as well as the Bible to reach to his audience and demand equal treatment because "all men are created equal", and to stop segregation.