Sorry, Oscar, but the only rule we can give you is that countries ending in 'a' (such as Colombia) form their nationalities with an 'n' , so that 'Colombian' is both the adjective and the noun for nationality. All other countries are completely irregular, I'm afraid, and you just have to learn them.

Good question, but we don't have a fixed system in English. You just have to learn them individually. To illustrate, here's how it works with the three largest Australian cities: Sydney -> Sydneysiders Melbourne -> Melburnians Brisbane -> Brisbanites And with the Australian states of those cities... NSW - New South Welshmen (or Cockies, if you follow the footy) VIC - Victorians (that was easy) QLD - Queenslanders (or Cane Toads, if you follow the footy) ...and as a bonus, people from Tasmania are either Tasmanians or Taswegians. :)

Sorry Oscar, English doesn't make much sense. However, I live in Spain and the people from Cadiz are Gaditanos; from Ávila they are Abulenses and the inhabitants of Cabra... egabrenses, ¡y no otra cosa! Saludos, y buena suerte, Simón.

Some other words are feminine and masculine pronouns are no words that serve to both females, while for males. Thus, Who lives in Cuba, if you are referring to a man, so this will be Cuban and if you refer to a woman, is Cuban. Now an example of both: Who lives in Malta, Maltese is called, this is for the man or woman who will identify the sex will be the article. Example: The Maltese called Cameron.                             The Maltese is called Harry. I hope I have helped you.

Some other words are feminine and masculine pronouns are no words that serve to both females, while for males. Thus, Who lives in Cuba, if you are referring to a man, so this will be Cuban and if you refer to a woman, is Cuban. Now an example of both: Who lives in Malta, Maltese is called, this is for the man or woman who will identify the sex will be the article. Example: The Maltese called Cameron.                             The Maltese is called Harry. I hope I have helped you.