During the 19th century Joensuu was a city of manufacture and commerce. When in 1860 the city received dispensation rights to initiate commerce, former restrictions against industry were removed and the local sawmills began to prosper and expand. Water traffic was improved by the building of the Saimaa Canal. Consequently, a lively commerce between the regions of North Karelia, St.Petersburg and Central Europe was enabled. At the end of the 19th century Joensuu was one of the largest harbor cities in Finland.
Throughout the centuries Karelian traders have plied the Pielisjoki River. The river has always been the lively heart of the city. Canals – completed by 1870 – increased the river traffic. Thousands of steamboats, barges and logging boats sailed along the river during the golden age of river traffic. The Pielisjoki River has also been an important log raft route, providing wood for the sawmills and for the entire lumber industry.
The proximity of the eastern border has been an important factor in the history of the city. The Republic of Karelia is once again a significant area for cooperation with nearby regions in Russia. Export companies in Joensuu continue the pre-revolutionary traditions in foreign
