Fracking or hydraulic fracturing is a method utilized by oil and gas companies to increase production of oil or gas from a well that would otherwise exhibit a low flow rate usually due to the geologic rock formation being too dense to allow for the economic recovery of hydrocarbons.
The Vikings lived in Scandinavia (mainly Norway, Sweden and Denmark), and in Iceland. They ventured (and proliferated) as far as Italy and the Mediterranean, but more commonly sailed to Ireland, Northern France, England, and even North America. Norway, Sweden, Denmark.
During the Viking Age, between the seventh and 11th centuries, Norse traders, raiders and colonists established a presence in countries as far apart as modern-day Canada and Iran. The Vikings emerged mostly from coastal communities in Norway, Denmark and Sweden to explore, and eventually settle in, most European and Mediterranean countries.