Answer:
It would create a more self-sustaining domestic market and change the economic structure.
Explanation:
Australia is largely an export economy and has traditionally relied on the exportation of natural resources and also revenue from education to become one of the most prosperous nations on the planet.
With fewer more than 22 million inhabitants, Australia does not have a domestic market large enough to trade only with itself and still be as profitable. Were Australia to grow to the size of the United States or even Japan, domestic manufacturing and sales would increase dramatically thanks to a much larger national market.
