Alberta’s threat to divorce Canada is getting more serious than ever. Premier Danielle Smith announced this week that the oil-rich province could hold its first-ever referendum on independence in 2026, as the area’s pro-51st state activists ramp up calls to ditch the Great White North in favor of the star-spangled banner. “Staying with Canada is finished,” Alberta resident Steve Harvey, 52, told The Post. “We’ve been an eagle locked up in a cage for decades because of Canada. It’s time that we’re set free.” Alberta’s beef with Canada comes from growing anger over what’s viewed as the Liberal government chocking...