An kafa Tarayyar Babban Birnin Tarayya (daga baya aka sake masa suna Babban Birnin Australiya) a 1911 a matsayin wuri don babban birnin tarayya na gaba na Canberra. An kafa Melbourne a matsayin wurin zama na wucin gadi na gwamnati daga 1901 zuwa 1927 yayin da ake gina Canberra. An canja yankin Arewa daga ikon gwamnatin Kudu ta Australia zuwa majalisar tarayya a 1911. A shekara ta 1914, Ostiraliya ta shiga Birtaniya a yakin duniya na farko, tare da goyon baya daga Jam'iyyar Liberal Commonwealth da kuma Jam'iyyar Australian Labor Party mai shigowa. 'Yan Australia sun shiga cikin manyan batutuwan da aka yi a kan Front Front.
shekaru goma