What is the meaning of likewise?

adverb

• In like or similar manner."He was similarly affected"; "some people have little power to do good, and have likewise little strength to resist evil- Samuel Johnson
  • synonyms: similarly
• In addition.
  • usage: "he has a Mercedes, too"
  • synonyms: besides, too, also, as well
• Equally.
  • usage: "parents and teachers alike demanded reforms"
  • synonyms: alike