Final answer:
Rev. Parris and Giles Corey are arguing about land disputes.
Step-by-step explanation:
The external conflict between Rev. Parris and Giles Corey as Rev. Hale and Proctor approach the church in Arthur Miller's play 'The Crucible' is centered around land disputes. Giles Corey accuses Parris of only caring about money and power, while Parris accuses Corey of trying to steal his land. This conflict arises when Corey claims that his wife was accused of witchcraft by a Putnam in order to acquire their land.