The Gold Rushes: Why were they so significant in the growth and development of the Australian nation? The gold rush era of Australian history is very significant in the growth and development of Australia as a nation. It had a major impact on the economy, migration, the changing of the convict image, racism and population. As a result of the gold rushes which began in 1851 Australian life change into a more progressive and more attractive prospect for Australians and people over seas. It had significant