Anglo-American Rivalry (working-title) is a work-in-progress timeline by oshron. Unlike his longer timeline, Atlas: The March Towards the End, Anglo-American Rivalry covers a much narrower span of time and is being written with the intention of being much more realistic. If Anglo-American Rivalry is ever written in a Turtledove-like story format, the POV characters will be fictionalized versions of oshron's real ancestors, mostly Americans but also at least one Italian.

The earliest POD is technically September 4, 1783, but significant changes don't start coming up until after 1800. The timeline continues through to the OTL present-day (which will be adjusted depending on how long it takes to actually finish the timeline) and focuses on a mutual hatred between the United States and the United Kingdom. Due to the butterfly effect, numerous other changes take place as well, most of which have not been set in stone. One is that Italy is unified under Naples and includes the all lands of the Savoys (some of which belong to OTL France) and that Chile forms something of its own colonial empire, mainly with the expansion of its continental territory and the control of OTL French Polynesia. The most obvious changes, though, pertaining to the USA is that its borders with both Mexico and British Canada (as well as its internal borders) are quite different, with Mexico retaining Southern California, the Gadsden Purchase, and the Nueces Strip and the US-Canadian border never being formalized at the 45th parallel.

Other changes include:

• the Central Powers of Britain, Germany, Austria-Hungary, Italy, Portugal, Japan, and more!
• San Francisco as the capital of California!
• Walt Disney as a propaganda minister!
• President Alexander Hamilton!