Which side is the right side of the road to drive on?

In England, the steering wheel is on the right side of the car and you drive on the left side of the road.
In America, the steering wheel is on the left side of the car and you drive on the right side of the road.
Why? There are a lot of answers for this question.
 

In the 1700's in England men sat on a seat mounted on a wagon. What's more, he usually sat on the right side of the seat so the whip wouldn't hang up on the load behind him when he flogged the horses. (Then, as now, most people did their flogging right-handed.) So the English continued to drive on the left

Several hundred years ago, everybody used the English system. In the Middle Ages everyone drove on the left for the simple reason that you never knew who you'd meet on the road in those days; you wanted to make sure that a stranger passed on the right so you could go for your sword in case he proved unfriendly.

In the USA - When inventors began building "automobiles" in the 1890's, they thought of them as motorized wagons. As a result, many early cars had the steering mechanism-a rudder (or tiller), not a wheel-in the center position where the side of the road didn't make any difference. With the introduction of the steering wheel, a central location was no longer possible. Car makers just copied 'usual practice' and placed the driver on the curbside. Most American cars produced before 1910 were made with right-side driver seating although intended for right sided driving.
However - in 1908 Ford devised the Model T and it was the first car to feature a left-side driving position. By 1915 the Model T became so popular that other car makers began to follow suit.  

So there you are. But its kinda confusing especially since I am used to both .I did take driving lessons in England although because I moved I only took my test in America. Since then (10 years ago) I haven't driven in England. When I do visit England, it takes me a bit to get my bearings on which side of the road I am driving on when I get back to America though. And I'm sure it stops tourists from wanting to drive in this new country with its different rules. But there you go.