The XYZ Affair is an example of how the Adams administration was working on —

i think the answer is the one about environmental and social health.

hope this

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse

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.