Which courtier to the royal family of the city-state of Mantua wrote a guide that described how a courtier should act while serving at court?
A.
Machiavelli
B.
Cosimo de' Medici
C.
Cesare Borgia
D.
Castiglione
A.
Machiavelli
B.
Cosimo de' Medici
C.
Cesare Borgia
D.
Castiglione