In OTL, Britain attacked Copenhagen in 1807 because they were concerned that Denmark would side with Napoleon and his continental system. This pre-emptive act led Denmark to join up with france.
What happens if Britain doesn't make this choice? Would Denmark still remain neutral? Could...
There are actually quite a few ways that partition could have gone differently. For example, Sindh had some majority Hindu areas on the border which, for some unknown reason, were not incorporated into India. The lines in the Punjab were fairly arbitrary to begin with, and could have easily been...
This is fairly implausible. Even though the South's loss was inevitable in 1864, they continued fighting because they were entrenched.
(Oh, and hi Thakow.)
I could imagine a scenario were, in one of China's brief period's of outside exploration, a colony could be founded on the west coast. Then a more isolationist emperor could take over. This could provide the vaccine you are looking for.