Complex sentence: The role of the examining magistrate is important in civil-law jurisdictions such as France, which have an inquisitorial system, and as opposed to common-law jurisdictions such as England and the United States, which have an adversarial system and lack any comparable official.
Split into simpler sentences: The role of the examining magistrate is important in civil-law jurisdictions such as France, which have an inquisitorial system. In contrast, common-law jurisdictions such as England and the United States, which have an adversarial system and lack a comparable official.