The English Language:
There was a time when Latin was the most popular language in the World. Even today, the Latin language is alive through its descendants. It is considered a dead language today, but its European daughter tongues have millions of native speakers. However, the popularity of Latin in the past is nothing compared to the widespread fame that the English language enjoys today. Dutch, German, French, Japanese, Greek, Spanish, all have millions of speakers today. The Spanish language is spoken in both South and North America and has multiple varieties like Mexican Spanish and Columbian Spanish. But it is English that is considered the lingua franca of the world. It is the sole official language of various big countries including Australia, Britain, and the United States.
English has many varieties today because of its widespread use in the world. There is British English which is spoken in England. Then there is Canadian English that you can hear in Canada. The version of the vernacular spoken in New York and Washington is different from the other varieties. In short, there are as many versions of English as there are countries that speak it.