Pope boniface vii and philip iv fought over what?

The most remembered feud between Boniface VIII and King Philip was about the expansion of nation states and the consolidation of power of the monarchs. The monarchs and the Church of Rome had conflicts in terms of who should lead who. But mostly, the conflict between the two was heightened when King Philip IV ordered to charge clergies and people of the church taxes. Boniface saw it as an assault to traditional clerical rights and was totally against the plans of Philip IV. 

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b. germany and italy