Well, I think Scotland's the oldest and Northern Ireland is the youngest in the UK family, but if you're talking about the whole British Isles, then Ireland would be the oldest. Not sure who is who in the picture though.
Oh my god I can't decide! My favorites are Italy brothers, Spain, England, Canada, America, Nordics, Russia, Prussia, Germany, other European dudes like Baltics and so and and and wtf I love all of them.
Okay. Let's sum it up. I love European countries plus America and Canada. Nothing wrong with the another countries either.