Definitions of developed:

• adjective:   (of real estate) made more useful and profitable as by building or laying out roads

  Example: "Condominiums were built on the developed site"

• adjective:   (used of societies) having high industrial development

  Example: "Developed countries"

• adjective:   being changed over time so as to be e.g. stronger or more complete or more useful

  Example: "The developed qualities of the Hellenic outlook"