An extremely extensive timeline (some call it more detailed than OTL ) created and written by Jared. The early death of the US-American President Thomas Jefferson leads to the Embargo Act never being repealed. This results in the secession of New England, and ultimately a rump United States dominated by slave owners.
Popularity and longevity has led to the timeline winning Turtledoves in 3 separate years.
The timeline is commonly abbreviated to DoD.
A wide variety of machines and technologies in the Decades of Darkness world have different names than in OTL.
Airships are important in the North American War and are known as “cloudships”. Tanks are “arlacs” (from “ARmoured LAnd Cruiser”), cars are “horsts” (a colloquial shortening of “horseless steam car”), and radios/wireless sets are “funks” (from the German word for “spark” and “radio broadcasting”). Submarines are known as “sea wolves”.
The prefixes “sky-” and “cloud-” are often used in lieu of the OTL “air-” prefix. For example, “cloudscraper” for skyscraper, the aforementioned “cloudship” instead of “airship”, “skycraft” for “aircraft” and “skymarines” for “seaplanes”.
The terminology of the timeline has met with opposition from some Americans, who dislike the fact that the slave-holding, highly stratified state is known as 'the USA' and its inhabitants as 'Americans'. Of course this is part of the point of a dystopia, to shock with familiar words in unfamiliar ways. However, Jared has compromised by using the asterisk method to help underline the fact that this USA is not that of OTL. It is also often referred to as 'the DoD USA'.
The timeline is posted on AH.com here and has a dedicated website here. It also has an entry at TV Tropes.
At the 2008 Turtledove Awards, the timeline won the "Best 19th Century Timeline" category.