Answer :
Cut and burn agriculture—also called as swidden or shifting agriculture—is a traditional method of maintaining domesticated crops that requires the rotation of many plots of land in a planting cycle.
We may also gain a lot from the errors of the past. In the ninth and tenth century, the Vikings constructed farms in Iceland and Greenland using the same methods they had developed in Scandinavia. There is a general consensus that Iceland and, to a lesser extent, Greenland's environmental damage is caused by the direct transplant of ineffective farming techniques.
Numerous grazing animals, including cattle, sheep, goats, pigs, and horses, were introduced by Norse farmers who engaged in landnám (an Old Norse practice that roughly translates to "land grab"). The Norse transferred their animals to summer pastures from May to September, and then to individual farms during the winter, just as they had done in Scandinavia.
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