Another idea is that in the 1700s,people in France and in the United Stated started to use wagons with several pairs of hordes and to drive on the right side od the road. It was easier for thr drives on the left and control the horses with in the right hand, and it was safer if other vrhicles passed on the left so the drivers could see the distance between vehicles. Some people say that in England,people always drove on the left,France,people always drove on the right.