<prompt> Translate the following text to EnglishUjumbe wa posta na FPAs zilikuwa na kulipa kila mmoja ada ya terminal kwa kutumia viwango kamili vya barua ya darasa la kwanza kwa barua zote za LC na AO zilizobadilishana.  <response>: Postal Service and FPAs were to pay each other terminal dues applying full First Class mail rates to all LC and AO mail exchanged, the U.S. 