Introduction of simple forms of money in the states of the third grating, and North America not long ago that way and better documented than in Europe and its study sheds light on the potential emergence of advanced tools. Midst of those who considered the application of wampum and the custom of the potlatch or the competitive exchange of gifts in North America, disc-shaped stones in Yap, cowrie shells on a greater share of Africa and Asia, big cattle, manillas and whale teeth.
Manillas were decorating iron things worn as jewelry product in West Africa and used as a weapon at all so long ago, in 1949. They were the external shape of the pattern, their importance is, if the role, the main factor in their acceptability as a means. introduction of Wampum as a means in North America, certainly appeared as an extension of its desirability for decoration. Precious alloys have been decorating uses throughout the record, and probably has to exist one of the circumstances, why they were adopted for use as tools in almost all the old communities and civilizations.