Combining Texts

You have chosen 'Space and Time' by Hermann Minkowski, 'On the Conservation of Force' by Hermann von Helmholtz and 'There Are No Abstract Objects' by Cian Dorr

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All the ideas for Political Theory, or select a subheading:
      A. Basis of a State
      B. Nature of a State
      C. Ruling a State
      D. Ideologies