Complex sentence: In the early 18th century, the Miskito kingdom became organized into four distinct clusters of population, centered on the banks of the navigable rivers, but integrated into a single, if loosely structured political entity.
Split into simpler sentences: In the early 18th century, the Miskito kingdom became organized into four distinct clusters of population, centered on the banks of the navigable rivers. They were integrated into a single, if loosely structured political entity.