What impact did international Darwinism have on foreign policy?

It led to imperialism, which led to the US and other large countries getting involved in foreign affairs.

Explanation:

This led away from the monroe doctrine and washingtons precident about staying out of foreign affairs.  With the belief of social darwinism people felt the need to get involved.

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.

what's the passage bud?