If you are looking to emigrate from a 'third world' (what a ridiculous term) country to a wealthier one it can be quite hard. If you already have family or friends somewhere that can make the process considerably easier.
I think it's pretty much a given that Australia and New Zealand will accept you if you (a) speak the language (b) have a profession and (c) no criminal record. When I goto the local playground sometimes I wonder if I'm not in a suburb of London, such is the amount of English accents I hear.
This is why BC and Alberta were thriving when the Canadian dollar was worth more than the US dollar and the price of oil was sky-high, while Ontario was suffering. That said, I'm not sure of the larger implications to the Canadian economy as a whole if the US tanks. It may be simple to move to trade with China, though it may not.
And that is after you get here.