Hello just have some questions that I didn't have the time to find or try myself:

1. As far as I know the RMAH is restricted to your region. Does it mean if I play in another region say EU, will I have no access to a RMAH whatsoever or will the RMAH that appears be the US RMAH ? If its the last one, that means I can use USRMAH items on my EU characters ?

2. What happens if say I'm at the crown quest, I'm level 5 and I invite a friend level 1 to join, will he be on the same quest as I am and will he get the same experience after completing the quest ?

Thanks