Read this excerpt: meantime, it is necessary to remember that the lack of such a league in 1914 threw the world into the chaos of this war. . . . had there been a league of nations then, could sir edward grey have summoned into conference the authoritative representatives of the great civilized powers, and through them have focused the intelligence and the conscience of mankind on the austrio-serbian quarrel? there would have been gained the priceless moment of meditation which would have enabled the heady currents of racial and national passion to be allayed.1 newton d. baker, 1919 according to the excerpt, the league of nations was important for which reason?
A. Overthrowing empires
B. Preventing war
C. Granting self-determination
D. Lowering taxes