When was the first contact of the following first nations people of canada:

First nations of the Mackenzie and Yukon River Basins
Pacific coast first nations
Plateau Fist Nations
Plains first nations

First contact with whom or what?

Have you tried Googling these nations or -- (gasp!) checking your book?

To find out when the first contact with the First Nations people of various regions in Canada occurred, you can consult historical records and resources. Here's how you can gather information about each group:

1. First Nations of the Mackenzie and Yukon River Basins:
The Mackenzie and Yukon rivers run through large parts of northern Canada. To learn about the first contact with the First Nations people of this region, you can start by researching the exploration of this area by European explorers. Some notable explorers include Alexander Mackenzie and John Franklin. You can review their expeditions and interactions with Indigenous peoples to determine when the first contact occurred.

2. Pacific Coast First Nations:
The Pacific coast of Canada is home to several First Nations communities. To find out about the initial contact, you can explore the historical accounts of early European explorers who traversed this area. Some prominent explorers include James Cook and George Vancouver. Look into their expeditions and encounters with local Indigenous communities to ascertain when the first contact happened.

3. Plateau First Nations:
The Plateau region of Canada includes areas in British Columbia, Washington, Oregon, and Idaho. To discover when the first contact occurred with the Plateau First Nations, you can research the historical records of the fur trade era. The fur trade attracted European traders and explorers to this region, leading to early interactions with Indigenous groups. Explore the journals and accounts of traders, such as David Thompson and Alexander Ross, who operated in the Plateau area for insights into the first contact.

4. Plains First Nations:
The Plains region stretches across provinces like Alberta, Saskatchewan, and Manitoba. The first contact with Plains First Nations occurred during the fur trade era and the era of westward expansion in North America. To investigate when the first contact happened, you can examine the journals and records of explorers like Lewis and Clark, David Thompson, and fur trading companies like the Hudson's Bay Company and the North West Company. These historical documents will provide insights into early interactions with the Plains First Nations.

Remember to cross-reference multiple sources and consult reputable historical texts to gather accurate information about the first contact with these various First Nations groups.