The nation of Australia

5 min · 20 practice questions

In 1901 the separate colonies were united into a federation of states called the Commonwealth of Australia. The new Australian Constitution, which took effect that year, established the national parliament, the government and the High Court. Australia's population was then about four million — an estimate that did not include Aboriginal and Torres Strait Islander peoples, who were included in official population estimates only after the 1967 Referendum.

What Our Common Bond says

  • In 1901 the colonies federated into the Commonwealth of Australia.
  • The new Australian Constitution established the national parliament, the government and the High Court in 1901.
  • Australia's population in 1901 was about four million.
  • That 1901 estimate did not include Aboriginal and Torres Strait Islander peoples.
  • Aboriginal and Torres Strait Islander peoples were included in official population estimates after a Referendum in 1967.

Common mistakes

  • Dating Federation to 1788, 1851 or 1967 — it was 1901.
  • Thinking the 1901 population count included everyone — it left out Aboriginal and Torres Strait Islander peoples.
  • Confusing 1901 (Federation) with 1967 (the Referendum that changed who was counted).

Test yourself

One question at a time: pick an answer, then check it. Everything here comes from Our Common Bond, Part 1, page 11 (official booklet ↗).

Question 1 of 20

In what year did the separate colonies unite into a federation called the Commonwealth of Australia?

Checked against Our Common Bond (0.3.1). Last reviewed September 2026. How questions are checked