What was the main reason why australia's economy collapsed right before the great depression began?

The government made poor decisions, is the right answer.

Explanation:

The Great Depression of the 1930's badly hit Australia, but the main reason why the economy of Australia collapsed right before the Great Depression was that the government of Australia made poor decisions. Throughout the period of the Great Depression, Australia experienced years of extraordinary unemployment, falling incomes, low profits, poverty, lost opportunities for financial growth and individual improvement.

you didn't give any answers to choose from so i can't with this but, i do know something that the mexican government would be worried about and that is the wall that donald trump is currently trying to get up.

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.