Question

which sentence best describes the influence of alliances on the start of world war i?
alliances delayed the beginning of world war i because nations were afraid to attack one another.
alliances prevented many european countries from joining the war because they had signed a pledge not to.
alliances forced member nations to settle their differences through talks rather than through armed attacks.
alliances between nearly all european nations meant that when two went to war, all became involved.

Explanation:

Las alianzas militares en Europa antes de la Primera Guerra Mundial (como la Triple Alianza y la Triple Entente) crearon un sistema de dependencias. Cuando se produjo el estallido del conflicto (por ejemplo, después del asesinato de Francisco Fernando), estas alianzas obligaron a los países a unirse a la guerra en función de sus compromisos. En lugar de limitar la escalada, las alianzas ampliaron el conflicto regional a un conflicto global.

Answer:

Alliances between nearly all European nations meant that when two went to war, all became involved.