Why were caravels able to sail against the wind when other ships could not

Kublai khan honored his mongol heritage by: a)marring only one wife b)praying facing mecca five times a day c)slaughtering ten chinese officials every year d)building a large enclosed hunting ground at shangdu,his summer palace

Which of the following best describes the relationship between the united states and south korea today?

According to the map, most mining occurs in the. part of the state