House of Lancaster not becoming extinct in the male line in the 15th century. Anywho, there is a republican revolution in Britain and Margarete, niece of the deposed king and heir-apparent, flees to their colonies in "Meridia" and establishes a kingdom-in-exile. For 15 years she rules this colonial nation before dying of fever and the colonies are reintegrated back into republican Britain.
First up the map looks great (and you can see a full sized version here). I am assuming its an Inkscape map and for what is Birdperson's first MotF entry it is a strong attempt. One nitpick: the Genver Delta colony at the bottom right should have been differentiated a little better. Since there are two Britains in this timeline, it could have said Republican British instead of just British, but like I said, its a nitpick.
Honorable mentions this week go out to two maps by Rebecca "Upvoteanthology" Stirling: "The Hindian Empire" and "The semi-independent Kingdom of Arraillur, in 1450".
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Matt Mitrovich is the founder and editor of Alternate History Weekly Update, a blogger for Amazing Stories, a volunteer interviewer for SFFWorld and a Sidewise Awards for Alternate History judge. When not exploring alternate timelines he enjoys life with his beautiful wife Alana and prepares for the day when travel between parallel universes becomes a reality. You can follow him on Facebook, Twitter and YouTube. Learn how you can support his alternate history projects on Patreon.