I would say b. the union
hope it helps :)
Answer:
Hi, this is my first time answering someone's question- I hope I tried my best. This is the answer down below and I hope it helps! :)
Explain: Obama appeals to trust and authority throughout the speech because he wants to make himself appear trustworthy, caring, and knowledgeable.
It is letter A the Mongols.
hope this helps
and fyi i am Turkish.<span />