oldmanofthehills
Well-known member
There is history here. The English walked on the left so sword hand was toward centre of road. Later there were carriages as well as walkers. The French peasants walked on the right facing oncoming traffic still on the left. Come the French Revolution the aristos driving carriages got their heads chopped off. Those alive stayed on the right even in carts. The USA supported and were supported by the French and others saw Napoleons systemisation as sensible (which for units it is) but also adopted French driving side.Er -surely you're not claiming that the 'first car' was invented or made in America - are you?
Additionally, a bit of research into which side of the road traffic uses is instructional, it looks as though initially well over half the world drove on the left once, and the USA was one of the many that 'ended up' driving on the opposite side...
Left- and right-hand traffic - Wikipedia