Simply put, try to give the region of Southern Rhodesia a more orthodox, peaceful and democratic transition to independence, averting the careers of extremists and opportunists like Smith and (subsequently) Mugabe.
The POD can be earlier in the 20th century, prior to the IDU era, but ideally,, after WWII (but it can still take place prior to WWII).
The POD can be earlier in the 20th century, prior to the IDU era, but ideally,, after WWII (but it can still take place prior to WWII).