What are the three forms of reciprocity, and what social differences exist in each type of exchange?

Anthropological studies of economic strategies challenges the assumption of conventional economics by analyzing societal behavior from a cross-cultural perspective. Anthropologists look at the relationship between economy and society in which it occurs through a critical examination by address factors such as exchange, production, consumption, property, and the social changes that have occurred in the modern world-system. Answer these three questions in your weekly response:

1.) Using an example that you’ve come up with on your own, illustrate the role of culture in determining what is considered a commodity and how much value is placed on that commodity.

2.) What are the three forms of reciprocity, and what social differences exist in each type of exchange?

3.) Describe the Kula Ring and explain what benefits, both monetary and socially, come from participating in it.

Discuss how, in your opinion, commodity financialisation has affected the relation between spot and futures prices for commodities?

Summarise the views presented in the two above research articles and link them to the views that financial industry holds about the effects of commodity financialisation for investment opportunities.
In the light of what you have learned in this course so far (especially of the Theory of Normal Backwardation and Theory of Storage), discuss how, in your opinion, commodity financialisation has affected the relation between spot and futures prices for commodities?