Figure 2.
Conceptual framework for the development of regional systems. Various factors contribute to the development of both the type of regionalized system described in Figure 1 and the overall degree of regionalization.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.