Describe how Australians attitudes towards Papua New Guineans changed prior to world War 2. Answer in one sentence.

Prior to World War 2, Australians generally held negative attitudes towards Papua New Guineans, viewing them as primitive and inferior.

And how did that attitude change during world War 2? Answer in one sentence.

During World War 2, Australians' attitudes towards Papua New Guineans shifted to one of respect and admiration as they worked alongside them in the defense of the country.