title_body: International Language I was reading International Auxiliary Language, but I don't like their setups.
  
  Because, mostly, they use Latin alphabets!
  
  And that, my friends, cause confusions!
  
  No matter what the letter was intended to be pronounced, EVERY country (especially those use uses Latin alphabets such as English, German, French, Spanish, etc.) WILL pronounce it in their own way!
  
  'J' is pronounced 'h' in Spanish, 'z' in French, 'y' in German.
  
  Many country also have different pronunciation for 'H' and 'R'.
  
  Other than that, many countries are even "incapable of" pronouncing letters such as 'RR' in Spanish or 'Ü' in German!
  
  Due to those drawbacks, the invented language bound to be less efficient than it was intended to be!
  
  So, I was thinking, is there a way to overcome such drawbacks!?
  
  First of all, the most obvious approach is to find a set of alphabets that "Nobody had in common"! At least, find those letters that are used by "only one country"! Such as some letters in Greek alphabets (As far as I know, Greek are the only country that use Greek alphabets).
  
  Second, I think it's better to divide that alphabets into 2 group. First group are those letters that "every people in every country know how to pronounce". I think it's good to base it on Japanese, because Japanese has the least amount of pronunciations as far as I know. I believe they are the easiest language to learn pronunciation-wise.
  
  This group of letters build up the "basic and conceptual words", where all other words are the "combination product" of these words. You can think it as the "building block" of the words.
  
  Thus, I think it's better to make the words "a word a syllable" such as Chinese. And 1-syllable words made from the "Basic letters" are the "building block" of the words. More complicated words are the combination of these "basic conceptual words". Such as "Refrigerator" are actually "Electronic Ice Box" in Chinese.
  
  I also think it's better to make the letters "phonetic"! 'A' is always pronounced 'a' NO MATTER WHAT! Unlike English, 'A' has 2 million ways of pronunciation!
  
  The second group of letters are those pronunciations that "All the countries in the world that COULD EVER MADE! I know this might sounds like far fetching, but the idea is "Easy for everybody to learn such language. And for those who are familiar with the language, it will be easy for them to learn EVERY LANGUAGE"!
  
  You can think it as "The first group letters are the intersection of the pronunciations of every language, and the second group are the union of the pronunciations of every language".
  
  And the second group of letters are only used for those more advanced, probably grammatical, concepts. Which is "Unnecessary for basic conversations but critical for literature".
  
  So, my question is:
  
  Are such ideas feasible? What's the ups-and-downs, pros-and-cons of my ideas? Did I miss something? What else should I pay special attention to?
upvoted_answer: You seem to be confusing sounds with their representation in writing; similarly, countries and languages are not equivalent either.
  
  There is an inventory of sounds that are used in human languages; though most languages only use a small portion of it. If you are aiming for an international language, you should probably select those sounds that are common to most or all languages. I believe that toki pona comes close to that.
  
  Representing these sounds in writing is a completely different matter. Because different languages use the same letter to represent different sounds, your best bet might be to make up a completely new alphabet; then you don't have any pre-conceived notions of pronunciation to struggle with. On the flip side, everybody then has to learn the letters and how to pronounce them, which makes your language harder to learn.
  
  In your question you also touch on morphology: that is a whole different field, which you should probably put in a separate question.
  
  So, to summarise:
  
  
  each language has an inventory of sounds it uses, these are called phonemes.
  phonemes are represented in writing by letters; this is not a 1:1 mapping, and also
  depends on accents and dialectal variation.
  Letters can have diacritics (such as the dots on top of the &uuml;) &mdash; these usually make them separate letters from the base form.
  the letter-phoneme mapping is arbitrary; there is nothing inherent in the letter that determines how it should be pronounced.
  
  
  In general I would recommend that you read up on some of the concepts of linguistics, as that would make it easier for you to express what exactly you want to achieve.