You can transfer from an Australian undergraduate to an American university, but many times universities in different countries learn different things, so American universities will deduct some credits from you.

(For example, if you transfer 98 credits, but American universities only receive 85 points, because American universities don't have this subject 13 points)

I don't know about Britain, because I went to college in America. _

If you transfer to the United States, which university you go to depends on your GPA.

If the GPA is high (above 3.0, preferably above 3.5), you can try to apply for the top 40 universities. If it is below 3.0, it will be more difficult to get into the top 50.