File:Canada Dispute Change 1871-07-20.png
The British colony of British Columbia joined Canada as the sixth province. The province brought along its dispute with the United States over the San Juan Islands, as well as its portion of the Alaska boundary dispute.
This was built with the shapefiles:
- Territorial Evolution, from the University of Toronto: https://doi.org/10.5683/SP2/IQ7E0X
- Global Islands: https://doi.org/10.5066/P91ZCSGM
- United States maritime borders: https://nauticalcharts.noaa.gov/data/us-maritime-limits-and-boundaries.html
- United States details from the Newberry Library: https://digital.newberry.org/ahcb/
- Canada detailed administrative divisions: https://www12.statcan.gc.ca/census-recensement/2021/geo/sip-pis/boundary-limites/index2021-eng.cfm?year=21