The main reason why Australia's economy collapsed right before the Great Depression began was that the government made poor decisions.
Australia suffered badly during the period of the Great Depression of the 1930s. The Depression began with the Wall Street Crash of 1929 and rapidly spread worldwide. Along with other nations, Australia suffered years of high unemployment, poverty, low profits, deflation, plunging incomes, and lost opportunities for economic growth and personal advancement.
The main reason Australia's economy collapsed right before the Great Depression began is because the government made poor decisions. Many factors led to their economy collapsing but they can be summed up by the government made poor decisions.
The correct answer of the given question above about Enlightenment would be option C. The idea that differentiated most Enlightenment thinkers' ideas from Europe's traditionally dominant ruling philosophies is that Enlightenment thinkers believed that religion should play no role in modern societies.