Australian maps are shown with Oz in the middle, and the pacific / indian oceas each side, with South East Asia and Antarctia surrounding, exactly the same way US maps put the US in the center.
That's fascinating! I grew up in the US and I'm not sure I've ever used a world map with the US in the center. Curious where you got this impression. I can find some examples if I specifically search online, but they look very weird to me.
Every world map I grew up with has the US on the far left, presumably due to the convenience of splitting the map on the Pacific Ocean. The first example that came to my mind: https://i.imgur.com/FjBKD6k.jpg
Example of a map poster for kids: http://happylilac.net/sekaitizu-mihon.gif