There are several differences between the Arctic and the Antarctic that make governing the Arctic much more challenging. While the Antarctic is governed by a single treaty system, the Arctic is comprised of a patchwork of legal systems. This patchwork consists of existing legal systems of the eight Arctic states, as well as a soft law regime under the Arctic council. This makes the Arctic particularly difficult to govern, as it requires the coordination of numerous different environmental laws. Furthermore, the Arctic is inhabited by 3.8 million people (including indigenous people: see definition of FPIC) while the Antarctic is only visited by tourists. Industrial development has already begun in the Arctic since the 19th Century with whaling and sealing, and later with mining, hydrocarbon and other industrial developments. Finally, Antarctica is nonmilitarised since 1961, whereas the Arctic is a highly strategic and militarized territory.