the Shōkei era (also spelled Shōkyō era, a Japanese Northern Court era that lasted from April 28 1332 to May 25 1333)

greatly interesting

not ... at all

even if ...,...cannot

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

to study / to learn

correctness

history / the study of history

age, era, period (of time) / the times, spirit of the age / antiquity / a time in one's life, one's days (in college etc.)

jubilation