Which TWO statements best express the central idea of the text?

so they can defeat there oppenent

the correct answer is b, "fertility rates are increasing, so populations will grow more quickly in the future."

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.