context: A village called Joensuu can be found in maps and church books from the Swedish rule. At that time it belonged to Kontiolahti. The Russian Emperor Nicholas I established the city of Joensuu in 1848 instead of the village of Joensuu. The city began to grow rapidly. A lot of support meadows have been practiced in the Joensuu rapids. A canal was dug over the Joensuu rapids, and locks were built to allow larger ships to use the Pielisjoki as a fairway. Joensuu is an old woodworking city, but today other industries have almost completely replaced the woodworking industry.
question: When was Joensuu Founded?
answers.text: 1848