You understanding of history is not that good. Your American hubris is showing too.

When Japan entered the modern world in the nineteenth century, it looked to the world’s super power, the British Empire, from which to learn.

America was a backwater.

America only became a true super power after WWII in 1945. You also did not create the driving on the right (wrong) side of the road, that was the French. It is funny you assume that it was a US invention and the obvious choice for Japan “because America does it”. Open your mind, little one, the world has not revolved around the US for long and increasingly less so today.

Driving on the left is not a ‘British system’. Driving on the right is not an ‘American system’. They are just places where they do that.

Japan drove on the left when the only Americans lived in tents and ate buffalo. It goes back to the days of Shoguns (the warrior class, not the Mitsubushi 4wd).

The US drove on the left until the early 19th Century. New York was the first state to change to the right in 1804. But most of Europe drove on the right before then, so America follwed, not led.

Driving on the left was the convention going back 2000 years to Roman times.