Explica brevemente porqué cae la Monarquía Romana.

terminó con la expulsión del último rey en el año 509 que dio paso al establecimiento de la República Romana.

Explanation:

it finished with the expulsion of the last king in the year 509 that gave way to the establishment of the Roman Republic.

hope it helped! ^_^

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.