16. Secondary industries and supply
For much of the 20th century, the South Australian economy relied on its ability to attract and maintain secondary industry as a major employer of the state's population. Manufacturing boomed in the 1950s with the expansion of the motor vehicle industry and production of household goods such as refrigerators and washing machines.
The Commonwealth Department of Trade and Industry was responsible for the regulation of the purchase, sale and exchange of commodities. It also monitored the balance of trade, and industry protection and subsidy schemes, and supported trade agreement negotiations.