Complex sentence: In 1856, the Royal Academy of Music awarded the first Mendelssohn Scholarship to the 14-year-old Sullivan, allowing him to study first at the Academy and then in Germany, at the Leipzig Conservatoire.
Split into simpler sentences: In 1856, the Royal Academy of Music awarded the first Mendelssohn Scholarship to the 14-year-old Sullivan, allowing him to train at the Academy. The grant was extended, allowing him to study in Germany, at the Leipzig Conservatoire.