1. Norse conquest of Ireland
2. ATL History of the Vandal Kingdom (the Vandal kingdom does not need to succeed as a polity, it would be interesting with an ATL just for the sake of the story itself)
some ideas for this TL
- Vandal adoption of Berber alphabet, this will make the Maghreb more distinct than if it has Latin, Greek or Arabic alphabet.
- Religious conflict. Donatists, Arians, Trinitarians, Gnostics, Pagans, Plantonist, etc.
- Water scarcity
- Deforestation
3. Crimean Goths remain the elite on the Crimean peninsula
4. Baltic paganism survives in christian dominated Baltics till 21st century similar to Yazidism or Zorastrianism.