Great TL!
A few comments which I hope will be helpful (God knows I dearly wanted such comments for my TL).
In 1907:
"Russo-Japanese War The Treaty of Vladivostok, officially ending the Russo-Japanese War, is signed by both of its participants. The treaty assigns all of Manchuria, Korea, and Sakhalin Island to the Russians. The Japanese, in no position to protest the results of the treaty, turn inwardly."
Hmm..seems to be giving a bit much to the ones who militarily lost the area. The Russians would keep all of Sakhalin (which they had to begin with) and would probably pressure the Japanese to give up Manchuria and Korea in the British-mediated negotiations. The Japanese of course wouldn't really want to budge having actually won the areas but with an economy that's sinking fast they know that if the Russians can somehow renew the war then they might lose everything. I see more of a compromise agreement. Korea is probably returned to Chinese suzreignty officially. I could see the Japanese offering two deals:
1) Korea is split along the 38th parallel (as the Japanese had originally suggested to the Russians back in the late 1800s) with Russian influence in the north and Japanese in the south. Manchuria remains Chinese but Russia's special interests in the area are recognized. Port Arthur is retained by Japan and Japan's sphere only extends over the southern tip of the Liaodong Peninsula. Russian influence in the rest of Manchuria. Or perhaps Port Arthur goes back to the Russians and the town of Liaodong itself (and its port) goes to Japan.
2) Korea remains under total Japanese protection but under Chinese suzreignty officially, while Manchuria is split into Russian and Japanese spheres with the Russian sphere encompassing the Chinese eastern railway branch of the Trans-Siberian railway (the branch that goes through Mukden and then on to Vladivostock) and everything north of it, while the Japanese sphere includes everything south of it. The Japanese may throw in Port Arthur (or maybe Liaodong's port) to try to get the Russians to agree.
I am not sure which one the Russians would agree to (apart from their demand for everything or else war is renewed), maybe the other posters can throw in their two bits on the idea. Also keep in mind that the British were allied (alliance of convenience of course) to Japanese so they would probably not wish to take away everything from the Japanese.
Either way the outcome could actually be played as a victory of sorts for both sides (the Russians will probably want Port Arthur and some say in Korea to even attempt to call it a victory). The Japanese will probably consider it a defeat unless they get everything. In no case would Korea and Manchuria be assigned to Russia or Japan since both areas were officially Chinese. All that would happen is that their protection would be assigned to either power and either power's exclusive interests in those areas would be recognized.
Hmmm...with Japan and America at odds might it be possible that we will have a Japanese-American war involving the Philippines and Guam in the future (provided Japan gets back on her feet)?
"Hearst’s diplomats stike a deal with the Colombian government, paying a lump sum of $30 million for a swath of land twenty miles wide through the Panamanian isthmus. The region of Colombia north of the Canal Zone becomes the independent Republic of Panama while the southern region stays a part of Colombia. [6]"
Not going to happen. The US could get the Canal Zone you stated (even the 20 mile-wide one, although the original one was only supposed to be 10 miles wide (5 miles on either side of the Canal)). But the Colombian government in OTL initially balked at the original deal, if I remember rightly, because not enough money was offered and they didn't quite like the idea of US sovereignty over a strip of land cutting across their territory and cutting their country in two. I believe the Colombian lower house had approved the original deal but the Senate said "when hell freezes". So the deal you give where an independent Republic of Panama is set up from Colombian territory with no foreign conquest and for only US$30 million seems unlikely. What is more likely is that the Colombians are going to try to squeeze the Americans for as much control and money they can get and in the end the US will get its Canal Zone, but the isthmus on both sides will remain Colombian (though the area to the north will probably experience frequent rebellion) and the US will not have all the rights it got in OTL for the Canal Zone. So persons born in the zone will probably either be dual US and Colombian citizens (more likely this option) or solely Colombian (unless born to at least one American parent) and US law will prevail, but Colombian security forces and private citizens will have the right to free transit across the zone (so the Colombian army can deal with those pesky Panamian rebels north of the zone). The US would of course be given total freedom to protect the canal and its zone in any way it saw fit (unlimited basing rights) and would operate the Canal (though the Colombians may wish to get some gratuities/royalties in the form of a fixed percentage of revenue from the canal operations).
A few comments which I hope will be helpful (God knows I dearly wanted such comments for my TL).
In 1907:
"Russo-Japanese War The Treaty of Vladivostok, officially ending the Russo-Japanese War, is signed by both of its participants. The treaty assigns all of Manchuria, Korea, and Sakhalin Island to the Russians. The Japanese, in no position to protest the results of the treaty, turn inwardly."
Hmm..seems to be giving a bit much to the ones who militarily lost the area. The Russians would keep all of Sakhalin (which they had to begin with) and would probably pressure the Japanese to give up Manchuria and Korea in the British-mediated negotiations. The Japanese of course wouldn't really want to budge having actually won the areas but with an economy that's sinking fast they know that if the Russians can somehow renew the war then they might lose everything. I see more of a compromise agreement. Korea is probably returned to Chinese suzreignty officially. I could see the Japanese offering two deals:
1) Korea is split along the 38th parallel (as the Japanese had originally suggested to the Russians back in the late 1800s) with Russian influence in the north and Japanese in the south. Manchuria remains Chinese but Russia's special interests in the area are recognized. Port Arthur is retained by Japan and Japan's sphere only extends over the southern tip of the Liaodong Peninsula. Russian influence in the rest of Manchuria. Or perhaps Port Arthur goes back to the Russians and the town of Liaodong itself (and its port) goes to Japan.
2) Korea remains under total Japanese protection but under Chinese suzreignty officially, while Manchuria is split into Russian and Japanese spheres with the Russian sphere encompassing the Chinese eastern railway branch of the Trans-Siberian railway (the branch that goes through Mukden and then on to Vladivostock) and everything north of it, while the Japanese sphere includes everything south of it. The Japanese may throw in Port Arthur (or maybe Liaodong's port) to try to get the Russians to agree.
I am not sure which one the Russians would agree to (apart from their demand for everything or else war is renewed), maybe the other posters can throw in their two bits on the idea. Also keep in mind that the British were allied (alliance of convenience of course) to Japanese so they would probably not wish to take away everything from the Japanese.
Either way the outcome could actually be played as a victory of sorts for both sides (the Russians will probably want Port Arthur and some say in Korea to even attempt to call it a victory). The Japanese will probably consider it a defeat unless they get everything. In no case would Korea and Manchuria be assigned to Russia or Japan since both areas were officially Chinese. All that would happen is that their protection would be assigned to either power and either power's exclusive interests in those areas would be recognized.
Hmmm...with Japan and America at odds might it be possible that we will have a Japanese-American war involving the Philippines and Guam in the future (provided Japan gets back on her feet)?
"Hearst’s diplomats stike a deal with the Colombian government, paying a lump sum of $30 million for a swath of land twenty miles wide through the Panamanian isthmus. The region of Colombia north of the Canal Zone becomes the independent Republic of Panama while the southern region stays a part of Colombia. [6]"
Not going to happen. The US could get the Canal Zone you stated (even the 20 mile-wide one, although the original one was only supposed to be 10 miles wide (5 miles on either side of the Canal)). But the Colombian government in OTL initially balked at the original deal, if I remember rightly, because not enough money was offered and they didn't quite like the idea of US sovereignty over a strip of land cutting across their territory and cutting their country in two. I believe the Colombian lower house had approved the original deal but the Senate said "when hell freezes". So the deal you give where an independent Republic of Panama is set up from Colombian territory with no foreign conquest and for only US$30 million seems unlikely. What is more likely is that the Colombians are going to try to squeeze the Americans for as much control and money they can get and in the end the US will get its Canal Zone, but the isthmus on both sides will remain Colombian (though the area to the north will probably experience frequent rebellion) and the US will not have all the rights it got in OTL for the Canal Zone. So persons born in the zone will probably either be dual US and Colombian citizens (more likely this option) or solely Colombian (unless born to at least one American parent) and US law will prevail, but Colombian security forces and private citizens will have the right to free transit across the zone (so the Colombian army can deal with those pesky Panamian rebels north of the zone). The US would of course be given total freedom to protect the canal and its zone in any way it saw fit (unlimited basing rights) and would operate the Canal (though the Colombians may wish to get some gratuities/royalties in the form of a fixed percentage of revenue from the canal operations).