Complex sentence: For the first two decades, the High Court stayed reasonably true to the "co-ordinate" vision of the framers in which the Commonwealth and the States were both financially and politically independent within their own spheres of responsibility.
Split into simpler sentences: For the first two decades, the High Court stayed reasonably true to the "co-ordinate" vision of the framers. In co-ordinate federalism the Commonwealth and the States were both financially and politically independent within their own spheres of responsibility.