Granting titles of nobility is denied to both national and state government. Providing for and supervise schools, establish post offices, and impose duties on imports and exports are proposals or projects that both the national and state government can approve and implement.
I guess you could say influence in life
To put it on a simple term, psychology is the study to know why our mind works.
Behavior is not the only thing covered by psychology. It's a huge factor of it, but not all of it.
Psychology also teach us on why people developed a certain opinion, how people developed a certain preference, how interaction with other people affect our minds, etc.
C. New ideas in human rights and democratic governments led to rebellions
