Because English is one of the most widely spoken languages, there are many variations in it. One of the biggest differences is between English in the United States versus Britain. The British spell things strangely, such as spelling “gray” “grey”, “color” “colour”, and “realize” “realise” (they like to avoid z’s for some reason). Perhaps sometimes an American might think that the British way makes sense or a British person might like the American way better, but usually, there is little overlap. However, one rule that both Americans and the British argue about is the serial comma, otherwise known as the Oxford comma.