Complex sentence: The university, founded in 1389 by the sole efforts of the citizens, soon gained a great reputation; in the 15th century its students numbered much more than a thousand, and its influence extended to Scotland and the Scandinavian kingdoms.
Split into simpler sentences: The university, founded in 1389 by the sole efforts of the citizens, soon gained a great reputation. In the 15th century its students numbered much more than a thousand, and its influence extended to Scotland and the Scandinavian kingdoms.