would undergo periodic death which was synchronized with the cyclic intervals of the natural process the god embodied. The royals when they died were resurrected from the underworld as a god. The most desirable of the pantheon of gods for royal resurrection was the corn god (over 60% of their diet was corn). The corn god symbolized planting corn on earth and like the plant suffers cyclic decapitation (harvesting). War captives where used to play the ball game against their conquerors for ritual purposes. The ritual ball games outcome was never in doubt though, the captives always lost and were subsequently beheaded or had their hearts ripped out to provide a blood sacrifice. The captives were also utilized for sacrifices in numerous other religious rituals connected to the various gods to revitalize their presence. It was a common practice for the victims to be tortured and mutilated for protracted periods before being sacrificed. Thus, the well being of the kingdom was dependent upon the king because he was a conduit to the gods since he was the author of the constant blood sacrifices. These sacrifices were of several types. The first was conducted by the royal who cut themselves and dribbled some blood on a piece of paper which was burnt to convey it to the gods. The second method used sacrificial animals and people by killing them in various ways. In the earlier part of Mayan history, swidden (slash and burn) a dispersed form of agriculture was practiced. The farmer practicing this method would clear a patch of forest and burn the cleared vegetation which provided ash to stimulate growth. However, tropical soils are thin, most of the nutrients are concentrated in the growing vegetation and the soil becomes depleted in 2 to 4 years when used for this type of agriculture. After the soil becomes depleted and crop production falls off, the farmer would move to a new location and repeat the process. The depleted field would be allowed to lie fallow for 10 to 20 years to recover its fertility and then returned to for crop production. This form of agriculture does not require a great deal of labor, and can be practiced with simple hand tools. In the 1930's studies were conducted on swidden agriculture. The findings of these studies showed that it only required 48 days of work to produce enough food to feed a family. This method of agriculture can be sustainable as long as adequate periods of fallow time are allowed for the soil to recover its fertility. Because of the long fallow periods it requires a large amount of land to practice, and therefore can only sustain low population densities.[18] 17. The ball game was also played for non ritual or sporting purposes and both men and women were participants. It used a heavy rubber solid ball and is the precursor of modern ball games using rubber balls such as basketball,soccer, volleyball etc. The game was played by hitting the ball with hips thighs and upper arms but not kicked or thrown and passed through hoops mounted on the walls, the players wore protective clothing. 18. The Kayapo a modern South American Indian tribe practices sustainable swidden agriculture that mimics the process of ecological succession. They cut a patch of forest at the start of the dry season in April-May and leave the plant materials to dry until astronomical observations and a number of biological indicators such as the flowering of indicator plants and animal migrations start to take place in late August – September and set on fire when the meteorological conditions are correct.. The process of burning is carefully supervised by their shamans being focused on the combustion of small trunks and lianas but kept under careful control. Several weeks prior to the burning the soil is seeded with sweet potato, manioc, and yam which sprout immediately after the burn. Short cycle crops such as corn, beans , melon, and squash follow which quickly provide ground cover in conjunction with long cycle crops that