When was the first European crossing of North America from coast to coast accomplished?

Question

When were the French and Indian Wars (or the Intercolonial Wars), of which Queen Anne's War was one, fought in North America?

Answer 1

1792-93
Alexander Mackenzie crossed Canada from Fort Chipewyan on the east coast to Bella Coola, British Columbia, on the west. He also returned via the same route, the only early transcontinental traveller to do so. The dates 1803-06 are the more famous transcontinental expedition by Lewis and Clark.