What is the most important Enumerated Power of the Executive Branch? Why do think this is?

the answer i chose to believe is 'harmony'

on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.

1.   île de la cité

2. 200 years

3. for the nave and choir

hope im right, havent learned about this in a year