alternate history challenge

With a POD after September 1, 1914, have WW1 end on or before December 25th of the same year. Is this possible?

Is there any way to have Britain ruled from Australia by the present day with a POD before 1901? I was thinking some sort of natural disaster, but something else could happen.

Your challenge, should you choose to accept it, is to create circumstances in which "rule by/through drugs" is the modus operandi of at least one government. I don't mean something like Mexico where you have a bunch of powerful drug cartels, nor do I mean that the government is essentially one...

Is there a point in time where Islam could have possibly come to dominate China, or enough of it anyways, for there to be an Islamic dynasty ruling over all or most of China?

Obviously you couldn't have all of India and Iran have the same culture, it's simply not possible, but it should be possible for their cultures to remain much more united than OTL, right?