The President has the power to veto a law passed by congress. This is an example of

Checks and balances. They want to keep each branch in check. Legislative branch makes the laws, and the executive branch gives the president the ability to veto it, keeping the balance.

Explanation:

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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.

athena gives perseus a mirror sp he won't directly look back at her.