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.
In the 9th century AD seafaring warriors known as Vikings began raiding the coasts of Europe, burning, plundering, and killing as they went. These marauders, or pirates, came from Scandinavia-what is now Denmark, Norway, and Sweden. The people who lived there were known as Norsemen, or Northmen.