Answer:
This royal decree, issued on October 7, 1763, prohibited settlement west of the Appalachian Mountains. It also required settlers who had moved west of the Appalachians to return to the eastern side of the mountains.
So basically, pan-Arabism was an ideology closely to Arab nationalism, where Arab nations call for unity among Middle Eastern and North African countries. It's like, we share a common language, history, etc., so why not we be unified? And no, it was not successful. There are many conflicts within the Middle East today between Arab governments.
I would love to help you.. but I see that there are no " following options" sorry... :)...
Any of these will be the answer!