How to Advertise in the US for Amazon

If I want to target Canada, the US and the UK and say Australia, I need four different accounts. And also, without wishing to be Debbie Downer here, it's a little difficult to get those accounts. So, we kind of nailed how to do it in the UK and then the rules changed. What we had in the course six months ago doesn't work anymore - which is one of the reasons why I've been revising what the course says.