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.
The Vikings who stayed in France became known as the Normans (Northmen). The first great Norman leader was Rollo the Ganger. After a fierce battle in 911 between the French and the Normans, a peace-settlement was agreed.he Normans. The people of Scandinavia (Norway, Denmark and Sweden) found it difficult to produce enough food their needs. In the 8th century Scandinavians, who became known as Vikings or Northmen, began to send out raiding parties in search of food and plunder.