Answer:
Technology advances in manufacturing, agriculture, mining, fishing and forestry accelerated migration from rural to urban areas
Http://m.historyextra.com/feature/complex-crimea-history-relationship-Russia-Ukraine-Crimea
The answer is "signal detection theory".
Detection theory or signal detection theory is a way to measure the capacity to perceive between data bearing examples (called stimulus in living organisms, signal in machines) and arbitrary examples that divert from the data (called commotion, comprising of foundation stimulus and irregular action of the recognition machine and of the nervous system of the administrator). In the field of gadgets, the division of such examples from a disguising foundation is alluded to as signal recovery.
The Zulu Nation attacked the British supremacy column of Islandlwana using their technique called the "Horns of the Bull". After fighting for five months, the superiority of the British captured the Zulu's king, Cetshwayo, ending the war.