1. Historical background: (1) The Hundred Years War: The result of the war was an awakening of national consciousness in England. And the French language was gradually replaced by English native tongue. (2) The peasant uprising of 1381: It was the result of the conflict between the peasants and feudal lords
The need for a richer language In P, it is not possible to express assertions about elements of a structure. First Order Logic is a considerably richer logic than propositional logic, but yet enjoys many nice mathematical properties