Do we all look alike?

The other day I met two Latino gentlemen in town. The older one asked me if I was rooting for South Africa in the world cup? Do I look like I'm from SA? I didn't ask him that, but I just smiled and told him that I'm rooting for Nigeria cause I'm originally from Nigeria. The guy told me he was rooting for the USA team. I began to wonder why he said that since his own country made it to the World Cup. I didn't waste time in pointing that out to him. I said, "Well, it's good that Mexico made it". The guy smiled and said, "We're not from Mexico, we are from Nicaragua"
Anyway, I guess we all look alike. When it comes to World Cup, we identify ourselves not just by country, but by continent.