The horse came before man on earth.Although the earliest remains of primitive horses have been found on the North American continent,many scientists believe this small species traveled over a land mass in the Bering Sea to find the beginning of the modem horse in Asia.(1)_________________.Other scientists believe that the horse may have originated in Asia.In any event the animal soon spread into China,Europe,and the Middle East.The first modern horses to be introduced into the American continent came with the early Spanish explorers.Horses were bred into many types.The heavey horses developed in the low countries of Europe and (2)_________________.The oldest breed of horses is said to be the Arabian.The only true wild horses left in the 20th century are found in Mongolia.Horses are said to (3)_____________________.They have excellent memories and can sometimes find their way home when lost,and sense danger better than their masters.The early civilizations of man that had horses and made use of them developed more rapidly than those which did not.