Identify and explain the significance of each item below.

imperator (p. 156)

principate (p. 156)

Roma et Augustus (p. 158)

pax Romana (p. 159)

Praetorians (p. 165)

“five good emperors” (p. 167)

aqueducts (p. 170)

Messiah (p. 178)

pagan (p. 178)

bishops (p. 181)

heresy (p. 181)

barracks emperors (p. 182)