Well if you want to get technical, the proper way to say it would be The United States of North America, and when you say americans, you are including everyone North,Central and South. We must be bored at work, moaning about others peoples pronunciation lol.

The map killed me, thank you for the laughs hahahha.

The one that always gets me is this two names in Massachusetts, Worcester ( Wooostah) and there was another town which name I forgot, I am like... how the hell from Worcester goes to Wooostah ...