What economic choices caused the economy to become unstable in the late 1920's

whole lotta ptsd going on

what are the choices btw if it was me id say the lack of money to continue with education

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.