The CSF occupies the subarachnoid space (between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord. It constitutes the content of the ventricles, cisterns, and sulci of the brain, as well as the central canal of the spinal cord.
The MOST important fact is that ONLY ONE Article V application is required from each of 34 different states to require Congress to call an Article V Convention, and 49 of all 50 of the states have already filed at least ONE Article V application.
Only 9 of the 13 states had to ratify the Constitution in order for the new government to go into effect. All 13 eventually did, but North Carolina (1789) and Rhode island (1790) did so after the government was already in operation (March 4, 1789).