Actually every single one is correct, A<B<C they all are factors in the decline of Sumer.
The type of economic institution works to provide services to a community and does not pay taxes will be non-profits. These include the Red Cross or churches, which provide for the community, but is tax-exempt.
hope this helps
What actions? If you label them I can answer your question.
Pretty much anyone who was not male, rich, white, straight and fit into the medieval English ideal. Hope this helped!
