>>216035249
2/2
### Why I allocated those percentages
1. **Presence of Iroquois & Ojibwe ancestors pushes strongly toward North America.**
Both groups are native to areas that now sit in the northeastern/Great Lakes region of the U.S. and large parts of Canada. That makes **Canada + USA** the single most likely current countries of origin unless there was a known family migration out of North America.
2. **Multiple European ancestries (N. France, S. Italy, Ireland) create two possibilities:**
* The person is still in Europe (France/Italy/Ireland).
* Or they are in the large European-descended diasporas caused by 19th–20th century migration (primarily USA, Canada, Australia, Argentina, UK). Historically the biggest destinations were the **United States and Canada**, so those get higher weight.
3. **Relative split between USA and Canada (35/25):**
The U.S. has a bigger population (so greater prior probability someone is from there) and historically received more European immigrants than Canada — so USA gets the larger share. Canada retains more weight than any single European country because of the strong Indigenous presence (Ojibwe/Iroquois) and substantial European immigration, plus Quebec/Atlantic provinces which increase the plausibility of French/Irish links.
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