1. Political
2. Sociological
3. Legal
4. Environmental factors
Environmental factors may influence the project context. For a construction project an environmental impact assessment needs to be done early on in the project so that the project manager can understand all the risks involved and allow the project manager to plan time to allow consultation with the relevant authorities or to gain permits e.g. an environmental permit for discharges to land water and air.
Very informative and clear explanations.
I really like this answer, lots of detail and structure well done.