The first thing we tell someone we meet for the first time is our name, followed by our country and nationality. Learning a new language is synonymous with connection, and I believe that knowing how to name each country has the same effect.
If you are interested in involving yourself more in different cultures, learning about the countries and nationalities in Spanish can benefit you greatly.
You can feel closer to the people of the countries you visit and even engage in great conversations with the locals. After all, exchanging information about your nationalities can be a great icebreaker!