Whích best explains how the Senate affects the powers of the president?
The Senate must approve many presidential actions,
The Senate often has more powers than the president.
The Senate must have the same powers as the president.
The Senate often rejects many presidential actions,

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.