Read the dictionary definition of govern. All definitions for this word.
1. direct or strongly influence the behavior of
1. His belief in God governs his conduct
2. bring into conformity with rules or principles or usage; impose regulations
1. We cannot regulate the way people dress
2. This town likes to regulate
3. exercise authority over; as of nations
1. Who is governing the country now?
4. require to be in a certain grammatical case, voice, or mood
1. most transitive verbs govern the accusative case in German
See also: Merriam-Webster definition of govern