You may be referring to the Serdii , an ancient Thracian tribe, or looking for a phonetic guide to Serbia .
If you are a writer, Dungeon Master, or gamer creating a fictional nation named Serdia, use this template to build your lore. serdia
The apartments were small but functional (2–4 rooms), with indoor plumbing, electricity, and private balconies—luxuries for the target population at the time. You may be referring to the Serdii ,