Suppose that China colonised Siberia before Russia did, 17th century or so, and managed to hold on to this territory, how does this affect the events of the 19th,20th,21st centuries? Would there be a Chinese colony in Alaska which was also purchased by USA? How different would world war I be? A faster defeat of Russia? No Russian Revolution? Would China have still been invaded by all the allied powers because of the Boxer Rebellion-style uprising or would it be too large now? Would there be a warlord-era in China? Who would win and what would China be today? Nationalist? Communist? Still divided? If there was still a communist revolution in China would there be a Cold War between USA and China instead of USSR? How much different would this be? Would the nazis have still come to power in Germany and maybe they could defeat Russia quickly? Would Japan have been able to invade China now that it is larger and has many more resources?