Passage: Canada is geologically active, having many earthquakes and potentially active volcanoes, notably Mount Meager massif, Mount Garibaldi, Mount Cayley massif, and the Mount Edziza volcanic complex. The volcanic eruption of the Tseax Cone in 1775 was among Canada's worst natural disasters, killing an estimated 2,000 Nisga'a people and destroying their village in the Nass River valley of northern British Columbia. The eruption produced a 22.5-kilometre (14.0 mi) lava flow, and, according to Nisga'a legend, blocked the flow of the Nass River.Average winter and summer high temperatures across Canada vary from region to region. Winters can be harsh in many parts of the country, particularly in the interior and Prairie provinces, which experience a continental climate, where daily average temperatures are near −15 °C (5 °F), but can drop below −40 °C (−40 °F) with severe wind chills. In noncoastal regions, snow can cover the ground for almost six months of the year, while in parts of the north snow can persist year-round. Coastal British Columbia has a temperate climate, with a mild and rainy winter. On the east and west coasts, average high temperatures are generally in the low 20s °C (70s °F), while between the coasts, the average summer high temperature ranges from 25 to 30 °C (77 to 86 °F), with temperatures in some interior locations occasionally exceeding 40 °C (104 °F).

Question: What year did Canada have a devastation volcanic eruption which killed at least 2,000 people?
1775