Complex sentence: According to the historian Mazumdar, Lalitaditya concentrated his attention on the areas in the north after important victories in the south, thus his empire reached the remote corner of the Karakoram mountain range.
Split into simpler sentences: According to the historian Mazumdar, Lalitaditya concentrated his attention on the areas in the north after important victories in the south. His empire reached the remote corner of the Karakoram mountain range.