What are three important events that shaped Australia into the nation is is today?
You will have to choose three events and support your choices with discussion and some evidence.
You might want to choose an event way back in time, such as the formation of Australia as an island which led to its relative remoteness. This in turn led to slow population of the island by native peoples until the rapid influx of the Europeans in the 18C and 19C.
You could include more recent events such as the decline of the native peoples in the 19C. As evidence you could use http://wapedia.mobi/en/James_Dawson_(activist) as an example.
For more recent events you could use the chice of the capital or the child migrants to Australia.