How come the former British colonies of Canada, Australia, and the U.S. all use the dollar ($) when the UK uses the pound (£)?

by Anesthetize85
Skipp_To_My_Lou

Without discouraging further discussion, u/hillsonghoods answered the Australia part of the question here:

https://www.reddit.com/r/AskHistorians/comments/asupgj/why_do_former_british_colonies_canada_australia/?utm_medium=android_app&utm_source=share