He used sheep to escape. he told his men to tie 3 sheep together and hang under the middle one so polyphemous couldn't feel them. it shows he is perseverant and has a good mind for escapes (partially due to help of minerva)
I would say his greatest strenght is his mind
I think it's round.
Way to prove it - Watch a ship sail off to sea
You can see how the earth's curvature like that. If it was flat, then you could still see the ship.
Answer:
B-It marked the beginning of the end of the Axis powers in North Africa.
