What is the meaning of govern?

verb

• Bring into conformity with rules or principles or usage; impose regulations.
  • usage: "We cannot regulate the way people dress"; "This town likes to regulate"
  • synonyms: regulate, regularize, regularise, order
• Direct or strongly influence the behavior of.
  • usage: "His belief in God governs his conduct"
• Exercise authority over; as of nations.
  • usage: "Who is governing the country now"
  • synonyms: rule
• Require to be in a certain grammatical case, voice, or mood.
  • usage: "most transitive verbs govern the accusative case in German"