International English -Dialects-
*spelling
color - colour
centre - center
traveler - traveller

*Practice
American: I play sports on the weekend.
British: I play sports at the weekend,

American: Ralph will be in Tokyo Tuesday.
British: Ralph will be on Tokyo Tuesday.

*Vocabulary
line - queue
gasoline - petrol
subway - underground
elevator- lift
torch - flashlight
wrench - spanner

I think American ways are used well in Japan. Anyway I make mistakes always. My English is Japanese English. But I do not mind such a thing and do my best.