Who led the twelve labors as an atonement in mythology?

Heracles

Which mortal challenged Athena to a weaving contest and became a spider? Who wrote "I can do all things through Christ who strengthens me"? What country has the largest coast line in the South American continent? What's the name of the Swedish midwinter festival involving decorating houses with straw ornaments and candles? What form of short wavelength electromagnetic radiation is typically used in medical imaging of bones?