Welcome to the Q&A Forum

Hi Dunamis, Many thanks for your answer, but in case I don't use the canonical, is correct what I explain? Thanks

If you're not going to serve the pages from mysite.com/countryname/, then you wouldn't need to put the canonical tags on. If you are going to serve those pages, but not link to them from within your site, you might want to add the canonical tags anyway, in case people link to the URLs  under mysite.com/countryname/, so they'll pass their pagerank along.  You should also disallow that directory in your robots.txt, as Google has a way of finding pages and indexing them even if they're not linked to. I wouldn't expect you to get penalized.  I thought from your original post that the Is the content between the sites different?  If so you shouldn't have anything to worry about.

Nope, you are not targeting that region and you don't care about localised results in south america so don't worry about it. The search engine would never know as long as you don't block one of their crawlers anyhow so... block away.