adverb (r)

• with regard to a nation taken as a whole(adv.all)

  Example:
  A nationally uniform culture.
  

  source: wordnet30
• extending throughout an entire nation(adv.all)

  Example:
  Nationally advertised.
  

  Synonym:
  across the country, across the nation, nationwide
  

  source: wordnet30
• In a national manner or way; as a nation.(adverb)

  source: webster1913