Which of the following is the best example of a check on presidential power?

Congress override Presidential Veto is the best example of a check on presidential power

Explanation:

The President has a power to reject to approve a bill. The President decides what money is required for each government department. The Constitution explicitly allows the president the power to sign or veto enactment.

When the President rejects a bill he still requires the 2/3 votes from the chamber of congress who votes on the bill. Veto is the power to unilateral stop a law or bill passed.

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.