Why do Australians have to change currency in order to trade with other countries?

Australians need to change currency for international trade because each country has its own currency that reflects its economic conditions and monetary policy. When trading, businesses must convert Australian dollars (AUD) into the currency of the trading partner to facilitate transactions. This process ensures that payments are made in the accepted currency, allowing for accurate pricing and accounting. Additionally, currency exchange helps manage exchange rates, which can impact the overall cost of goods and services.