Dr. King's repetition of "I have a dream" serves
what purpose?

The repetition serves as emphasis. Since the speech was given orally, the repetition also helps the audience comprehend his points. It is often more difficult to just hear information than it is to read or have visual aids, so the repetition helps the audience track with the speech and King's tenets.

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Explanation:

a big main expressed powr of the congress is to

borrow money

congress borrows money all the time this is a rpime factor to pay for things that the americans need for example they give money ot the banks they give money to the milltary they borrow money so they can give it back to the people who need it such as the buisnessses and the army

d. islands off the coast of newfoundland