Not all countries have the benefit of funding/technologies for developing GIS data stores. I'm looking for a list of common GIS data sources that should be investigated when trying to build a good basis for GIS analysis in developing nations (e.g road/river networks, DEMs, land use). Free or paid data.
My first stop is usually Glovis for Landsat coverage, but I often come up short on vector data.
For example, I would like to create a series of thematic maps for Nepal containing any and all GIS information I can get my hands on. Where would you begin?
EDIT: Organizational sources could also be useful, even if their data is not available online. E.g contacting the government department in charge of water resources.