world systems
As world systems grow and expand they have cross cultural exchange which promotes interactions such as trade and technology as well as hinders their interactions because of such things as plagues and customs. Trade and technology both better the economies and lifestyles of both interacting systems while plagues and customs cause the systems to become alienated from one another. ... When a system develops better technology and trade items, this promotes different systems to interact and exchange information. ... This clearly shows the other world systems’ desires to improve. Documents 7 and 8 describe the beautiful items being made and exported from Ceylon reflecting the urgent demands for their goods by other peoples around the world with no other access to the items than by trade. ... This clearly shows that trading between two systems is successful because of the many traders that have gone and come back with their experiences.