What did South Africa do exactly.
Anyway what can you guess? Is it mostly Indian, White, Black, some equal mix of the three?
Also with Australian and British parliamentarians, i'm sure parliament time must be a zoo.
International estimates can guess that the political structure of South Africa allows for Whites, Mixed Race, and Indians to have some form of political power and not face discrimination, so it is believed that these groups constitute the majority of South Africa. Afrikaans is the main language taught and spoken, with English and German an acceptable secondary language, the use of native languages is believed to be forbidden in all matters involving government affairs, and it could potentially be illegal to speak native languages in large groups (i/e a rally), but this is not known.
There's still extreme discrimination and ethnic cleansing of South Africa's native populations. Bantustans are believed to still exist, although with little to no authority and could only exist as a means of gathering forced labour workers. Most international observers agree that outright murder of natives has ceased on a national basis.
Did Canada retain the monarchy when it left the Commonwealth or did transition into a republic. And is there much of movement within Canada to return to the Commonwealth.
Canada has retained the Monarchy. There is little appetite to rejoin the Commonwealth in Canada, due to the continued dislike of the War in Burma. Since the Commonwealth is much stronger than what we know it as, there is a legal requirement for Commonwealth members to send soldiers to Burma in some capacity, while one could just ignore this, both Canada an Nigeria quit the organisation in protest of the War. They both used it as a thread to try and get the Commonwealth Parliament to vote against a resolution supporting the War, but it was to no avail. Canada remains on good terms with the United Kingdom all all other Commonwealth realms otherwise, and is still has observer status, allowing it to participate in such things as the Commonwealth Games.
What's going on in Burma ITTL that makes war there neccecaryily, and why is it so controversial?
I'm working on the wikipage.
Would it be merged with Newton?
Nope, as towns were annexed by the City of Boston, they became neighbourhoods and retained a large amount of legislative and political autonomy. Not as much as a New England town, of course, but still a sizable amount of power. Newton and Needham are separate neighbourhoods.