Two types of relations-dependence and interdependence-are the basis for two unique different types of social structure: 1) exchange relations and networks, and 2) groups. The construction of mutual dependence that underlies all social Trade relations is riskier than the structure of interdependence that underlies cooperation in teams. I argue that http://charliewrlfa.full-design.com/The-Fact-About-ENGLISH-PREMIER-LEAGUE-PRO-SOCCER-AGENT-KING-SPORTS-MANAGEMENT-That-No-One-Is-Suggesting-34870949