Which planet served as gladiatorial grounds in 'Thor: Ragnarok'?

Sakaar

Who dreamed of sheaves bowing down to him, angering his brothers? Which small edible marine animal is escargot made from? Which ancient Roman city was destroyed alongside Pompeii by the eruption of Mount Vesuvius? Who does Phoebe marry in the final season? What color do you get by mixing red and yellow?