Answer:
Slash and burn agriculture also known as primitive subsistence farming is used by arrivals mostly.
Although it has quite a few advantages it also has a few disadvantages.
1). This type of farming cannot feed a lot of people. It can be used only by the people of the family.
2). The land that has been used once cannot be used again .
3). This kind of farming requires the farmer one the family to change their lands again and again.