Can the Internet work independently within various regions of the world or are there safeguards in place that take down portions of the Internet-network (yes, I see the redundancy) when a major telco line is taken down that provides the only source of the Internet to a specific region of the world?
I'm sure many recall the story that broke last April of the Georgian woman who hit a major networking line with a shovel, cutting the Internet for the entire Armenian region. When that happened, did the people of that region lose complete access to the Internet or were they able to access local sites hosted within that region of the world?
I have a fair understanding of how TCP/IP communication works and it would seem to me that they would still have regional access. However, due to the nature of international business, I can think of a couple cases where it would be better to take down the entire Internet for the region until the broken line was repaired.