Opposite American Ways

I wonder how things are so opposite in US than rest of world.
Let me enumerate few:
Americans call a Petrol Station as Gas Station.
Americans call a Curd as Yoghurt
The switch in On status means off here
Most parts of US are quite cold, still evrybody loves to drink Coke with Ice....
The Plug points are totally different...
people drive on right...
Keeping guns is legal in world most advanced legal system...

At the moment I cud think of these points....
Most of Americans origins are in Europe, But Here they created systems which are totally different and unique than their origins.........

Is it coincidence or some conscious strategy!!!!!!