Answer: Extraordinary assumption
Explanation: Appraisal could be defined as the estimation or evaluation of an object, property or structure in other to determine either the worth, condition or nature of such property or object.
An Extraordinary assumption during appraisal means a presumption that certain unknown information exists or is a fact. It assumes a condition which is unknown to be true and as such if the information is found to be false may alter the result or conclusion of the appraisal.
Such is the scenario above, when the appariser assumes there is no leakage or contamination based merely on unknown fact.
Autocracy..................
I would say some people take, individual differences too personally, and then conflict starts, people fight, argue, even start wars.
Fighting major sea battles between 1861 and 1862, creating a blockade of confederate ports, taking control of the Mississippi river.
Rules are made by Congress and the president. Also what do you mean by the first part? be more specific.