During the French and Indian War in America, British troops who had helped the colonists to fight the war, were now left stationed in the colonies for protection, and demanded money to pay for the troops. The British Parliament taxed American colonies to obtain money for these payments. Also in 1764 the British began imposing new laws and taxes such as the Sugar Act and the Quartering Act. The colonists, unhappy by these raises in taxes, came with the motto "No Taxation Without Representation".
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.