Important landmarks in Australia’s democratic history By buggati8 Jun 1, 1215 Magna Carta A document given to King John in 1215 in an attempt to limit his powers and protect their rights. Jan 1, 1901 Federation of Australia Jan 1, 1901 First Australian Prime Minister- Sir Edmund Barton Period: Jan 1, 1901 to Feb 1, 2014 Timespan Apr 5, 1927 Parliament House built in Canberra Apr 16, 1938 Formation of ACT Aug 15, 1947 Australia joing the Commenwealth May 27, 1967 1967 Referendum Jun 24, 2010 Australia's first ever female Prime Minister