The article determined this assertion to be unsupportable in international law. During his tenure Nigeria avoided running up unsupportable debts. Easy credit arose as a lubricant for consumption, sometimes enabling unsupportable spending binges. The various Nigerian census figures have been controversial and are deemed unsupportable. It was following the capture of Faro that the siege of Albufeira became unsupportable. Systems that lack any of these requirements are said to be unsupportable. Block I is complete and concentrated on the replacement of unsupportable systems.