What proportion of people in Rome were slaves?

30 to 40 percent

Estimates for the prevalence of slavery in the Roman Empire vary. Estimates of the percentage of the population of Italy who were slaves range from 30 to 40 percent in the 1st century BC, upwards of two to three million slaves in Italy by the end of the 1st century BC, about 35% to 40% of Italy's population.

beowulf is considered an epic poem because it describes the actions of a great warrior.

beowulf is taken into account an epos. in this poem, the main character may be a hero who travels nice distances to prove his strength at not possible odds against supernatural demons and beasts. in the poem, beowulf was a young warrior and he leaves his country to hrothgar, as hrothgar was in a great trouble.