I'm to compare I have a Dream speech with Mandela's Inauguration speech literary devices used in their speeches. I found the similarities of literary devices used for both speeches but I cant answer the differences of literary devices between the two speeches. Could you please help me.

Answer 1

You should make two lists, one for the Dream speech and one for the Inauguration speech.

On each one, start by listing all the similarities you've already found. Yes ... you'll be repeating yourself!

Then list any other devices you find in each speech and take note of what's in one list that is not in the other. Those will be the contrasts, the differences.

Use this webpage to help:
http://www.tnellen.com/cybereng/lit_terms/