British and American aren't spelling choices. There are differences between different dictionaries. Many international organizations¹ like the United Nations

British and American aren't spelling choices. There are differences between different dictionaries. Many international organizations¹ like the United Nations use Oxford spelling: https://en.wikipedia.org/wiki/Oxford_spelling https://en.wikipedia.org/wiki/Oxford_spelling I think it's an excellent compromise, as it looks slightly foreign to the average American and the average Brit. ¹ Oxford spelling!