Whydoesmostoftheworldtravelontherightsidetoday?Theories...
问题详情：Whydoesmostoftheworldtravelontherightsidetoday?Theoriesdiffer,butthere’snodoubtNapoleonwasamajorinfluence.TheFrenchhaveusedtherightsinceatleastthelate18thcentury.SomesaythatbeforetheFrenchRev...