interdependency

noun

1. A mutual dependence, connection or correlation.

   “All life on our planet exists only because we are enmeshed within a complex web of interdependent ecological and social systems. Executives must remove their blinkers and recognise this natural law of interdependency.”

   “In a superbly argued and richly detailed account of the interdependencies of slavery and revolution throughout the Americas, as well as the religious traditions of Protestantism, Catholicism and Islam (many of the west Africans were educated Muslims), […]”