Which of the following groups was most immediately affected by the Gadsden Purchase?

the answer is "by providing data about careers and annual mean wages"

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.

can someone just answer this