What impact did king William I have on church and government courts

The conquering king retained the right to overrule the decisions of church courts and to hear all cases in which a layman was in conflict with the church. William personally attended the local church councils which now became more frequent. He acted as master of all they did.

William worked closely with Lanfranc, who organized the church and, using English precedents, brought the Archbishop of York under the authority of Canterbury. William preferred to deal with one church hierarchy, not two. Bishops became part of the feudal military structure.

Explanation:

rain should be the answer.