input: 
  from typing import List
  
  def list_countries(data: List[str]) -> List[str]:
      """ Read the country data from a given list of country names and return 
      the list of countries. This is useful when you have a JSON file and want 
      to turn it into a list.
      >>> list_countries(['America', 'Brasil', 'Canada'])
      ['America', 'Brasil', 'Canada']
      >>> list_countries([])
      []
      """
  
output:     return data