How were the mongols able to create a large empire, and why did it collapse?

By ruthless inter-breeding.

Explanation:

They had traditions of extreme warfare violence followed by murdering the ruling class of the other tribes then interbreeding the two tribes, so the offspring would all be a part of the Monguls, one tribe.

answer: you could try asking a family member maybe?

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.