Polish
Polish is a Western-Slavic member of the Indo-European language family. It began to take form in the10th century. The decisive factor was the formation of the Polish state. It is a flexional language, with seven cases of declination, two categories of numbers, a three gender system in singular and two genders in plural. The verb is conjugated according to time, person, way, voice and aspect. The language has conserved the nasal vowels that make it different from other Slavic languages. Another differential factor is the accent that falls on the penultimate syllable and is not movable like in other Slavic languages. Foreigners but also Poles generation after generation, have a very hard time dominating the spelling of words that contain the letters "u" and "ó", "h" and "ch", since they have a very similar pronunciation and sound. Polish grammar has an enormous amount of rules and an equally huge number of exceptions.