Complex sentence: This uprising, which he described in detail, destroyed the French Fort Rosalie and nearly all the colonists there, and led to the King ending the concession of the Company of the West, and seizing control of the plantation that Le Page du Pratz was managing.
Split into simpler sentences: This uprising, which he described in detail, destroyed the French Fort Rosalie and nearly all the colonists there. It led to the King's ending the concession of the Company of the West, and seizing control of the plantation that Le Page du Pratz was managing.