The influence of Rome as a country made Latin the common language of South and Western Europe. In these areas Romance languages (Italian, French, Spanish, Romanian and Portuguese) were later derived from Latin.
To understand the English language thoroughly it is necessary to have a knowledge of Latin. This is caused by the fact that Anglo-Saxon language (Old English), had borrowed many words from Latin, either directly or through French. This Germanic language group, spoken in Britain, south of the Forth (except Wales and Cornwall), has been making these borrowings both before and after the Norman Conquest (AD 1066). As a result, modern English and Latin are quite closely connected.
also Latin was the main language that people learned in england from the 16th to the 19th century
yes i am a geek but hope it kinda answers your question!