sentences:  The invention of the horse collar in China during the 5th century (Southern and Northern Dynasties) allowed horses to pull greater weight than they could when hitched to a vehicle by means of the ox yokes or breast collars used in earlier times.The horse collar arrived in Europe during the 9th century, and became widespread throughout Europe by the 12th century.With the invention of the automobile, the tractor and other internal combustion vehicles, the need for driving horses diminished, beginning with the end of World War I and to an even greater degree after World War II.