President Vvowed to send a man to the moon by the end of the 196Os. Kennedy Elsenhower Johnson

John F. Kennedy

Explanation:

On May 25, 1961, President John F. Kennedy announced his goal of putting a man on the moon by the end of the decade.

to keep us neatruel and not get involved in any wars

he assumed control of treaty negotiations with a hostile power

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.