What does 3 booms mean at the pentagon

the answer is selfishly. hope this !

1.   île de la cité

2. 200 years

3. for the nave and choir

hope im right, havent learned about this in a year

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.