Complex sentence: Although his father had united Francia for the first time, he had divided the kingdom between his four sons, and at the age of about 14 Chlothar inherited two large territories on the Western coasts, separated by the lands of his brother's Kingdom of Paris.
Split into simpler sentences: Although his father had united Francia for the first time, he divided the kingdom between his four sons. At the age of about 14 Chlothar inherited two large territories on the Western coasts, separated by the lands of his brother's Kingdom of Paris.