Originally posted by EdwardTking
(1) If MAO had died; the surviving communists would probably have done a deal with the nationalists. They'd have fought the Japanese together and been incorporated within the power structure. The resultant nationalist government would
therefore not have been so anti-communist.
This
was the arrangement betw the CCP and the KMT up till 1927-28 when Chiang Kai-shek launched his Northern Expedition and his troops reached Shanghai. Members of the CCP also joined the KMT as private members and both organisations were organised similarly.
Then he turned savagely on the Commies, probably to garner support fr the elite class of Shanghai (the Commies were inciting the workers to riot) despite the Communists' aid in helping his Northern Expedition to succeed in many areas (esp cities). Within days, thousands of Communists had been executed (beheaded actually) in the streets of Shanghai and the survivors fled into the countryside, trying to organise soviets.
Only 2-3 of the soviets would survive to join the Long March to Yenan.
(2) The US would have probably provided a lot of aid to a
post WW2 China and therefore less to a post WW2 Japan.
Indeed, the US intended for KMT-ruled China to be the regional power in Asia, replacing Japan. As the Cold War developed, China would probably join the Western camp. The Soviets would have to station even more troops along the long Sino-Soviet border. The Soviet Union's collapse might come sooner.
(3) The Chinese would also have traded with the USSR.
With the inception of the Cold War, this would probably be unrealistic. Besides, the Russians always had a historical fear of an Asian invasion fr the east (remember the Mongols?).
(4) Peasant owner occupier of farms was the norm before
MAO and every village and town had its small business
artisans etc. In many ways China had a much more
developed market economy than feudalistic Russia.
True. Particularly the Yangzi valley (the heart of KMT power) was developing rapidly up till the Japanese came. Shanghai was the banking center of East Asia etc.
There was also the millions of Overseas Chinese (like me

), who were even more exposed to Western ideas. Get them back; China will develop even faster.
(5) However regional instability, corruption and warlords
would have slowed it down.
True, but the KMT with its support base in the Yangzi would eventually gear up enough resources to hold the rest of the country firmly. Main problems were time and Japan.
(6) Regional deaths due to flooding and over population
arising from western drugs reducing infant mortality and subsequent malnutrition and starvation would have continued
as in Indian sub/continent with BanglaDesh.
I think this is pure speculation... Besides, China would probably receive a lot of help of the US in managing population and natural disasters.
(7) I rather think that there would have been a national
state; but with spoken language regions being left to
internally govern themselves. Probably much like India today.
Not likely, the Chinese had always practised a strong form of centralization since ancient times. With modern technology, more likely to develop national-level bureaucracies.
(8) Tibet would be independent; but Taiwan would be included.
Hong Kong would have reverted to China much earlier; probably expanding inland rather than upwards.
Hard to say about Tibet; Chiang and the KMT were fervent nationalists (it's called the Nationalist Party for a reason

). Chiang would probably like to gather all the ex-Manchu domains under the Chinese dominion. It was only under heavy Soviet pressure that he agreed to Outer Mongolia's 'independence' in the early 1920s (when he was weak).
(9) Without communism in China; the North Vietmanese
would not have adopted communist; so the US would not
have involved themselves very much.
The Vietnamese Communist movement was separate fr the Chinese one. Hard to say.