 In the mid to late 1800s, Yuułuʔiłʔatḥ territory expanded through warfare in north eastern Barkley Sound, bringing the Nahmint and Effingham river valleys under its jurisdiction (where much of these territories remain today).The Nahmint River in particular became valuable as Yuułuʔiłʔatḥ's major salmon source.With the imposition of the Indian Act, Yuułuʔiłʔatḥ experienced displacement into reserves and the dispossession of their territory and resources.