What is Britain?
Is it the same as the UK?
What is Briton?
Wtf is up with Canada?
Is it it’s own country?
If yes, then why do they still salute the queen or king?
If no, how are they operating as it’s own country?
Same for Australia I guess, too?
Was there an Australian revolution?
Are all parts of the British island the same country?
Or are Scotland and Ireland seperate countries?
I can’t answer most of your questions, but one is easy:
The UK is a country. None of Northern Ireland, England, or Scotland are countries - they’re all a part of the UK.
You may or may not notice an outlier here: Ireland, which is not part of the UK and is its own country. Note that Northern Ireland is part of the UK, and is not a part of Ireland (despite being on the island of Ireland). The UK and the Irish have a… strained relationship.
Britain is the big island, not a country itself.
So to recap:
The UK and Ireland are both countries.
The UK is (primarily) made up of England, Scotland, Wales, and Northern Ireland.
Britain and Ireland are both islands. The Island of Ireland consists of Ireland (the country) and Northern Ireland (part of the UK).
This is false. Every single one of those is a country. They’re considered constituent countries of the larger country.
Even Wales remains a country despite the fact that, for certain royal and administrative purposes, it counts as part of England. That’s why there’s no dragon or other Welsh indication on the Union flag, to the rightful annoyance of the Welsh, when there are English, Irish and Scottish flags blended into it.
Further proof they’re all countries - not that this is strictly necessary - is that they each have their own parliaments.
Also Scotland has a different legal system. Northern Ireland does as well, I believe.
Honestly, it’s kind of a weird distinction. Afaik they’re functionally the same as US States except perhaps a bit more individual culturally.