Complex sentence: John refused to meet his King causing Philip II to use his power of suzerainty to confiscate all the lands John held in France and to accept Arthur's homage for Poitou, Anjou, Maine and Tours in 1202.
Split into simpler sentences: John refused to meet his King, so Philip II to used his power of suzerainty to confiscate all the lands John held in France. Phillip then accepted Arthur's homage, granting Arthur control of Poitou, Anjou, Maine, and Tours in 1202.