We can look back is history for seasons people move on the right or left of the load. Same people say that in Europe hundreds of years ago, people load their horsen on the left. This way, their sword was between them and anyone who was coming toward them in the opposite direction. They were ready to pull out their sword and fight to defend themselves with theirright arm. But there is evidence that people used the right side,to. In 1300 some say that Pope Boniface ordered pilgrims on the way to St.peter's Basilico to stay to the right when they crossed a nearby bridge.