The byzantines recorded abd saved the knowledge of what culture

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.

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others