Interdependence is the mutual reliance between two or more groups. In relationships, interdependence is the degree to which members of the group are mutually dependent on the others. This concept differs from a dependent relationship, where some members are dependent and some are not.
Interdependence - WikipediaIt would be difficult for us to live the way we do without relying on other countries for trade, for aid, for protection, etc. Our technology has made it possible for us to share knowledge and information with other countries almost instantly.