25932
The realisation that Britain could not defend its entire empire pushed Australia and New Zealand , which now appeared threatened by Japanese forces , into closer ties with the United States .
 Britain, Australia, New Zealand, United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Britain, Australia, New Zealand, United States