Complex sentence: In ancient Rome, the word "magistratus" referred to one of the highest offices of state, and analogous offices in the local authorities such as "municipium", were subordinate only to the legislature of which they generally were members.
Split into simpler sentences: In ancient Rome, the word "magistratus" referred to one of the highest offices of state. Analogous offices in the local authorities, such as "municipium", were subordinate only to the legislature of which they generally were members.