It's one of main cores usually in school. Has writing and reading, Hundreds of years old! 

This Is a Certified Answer

In its broadest definition, 'English literature' is the entire body of works
written in the English language during the past 1400 years by inhabitants
of England, Scotland, Wales, and Ireland. 

It's a terrific depiction of the evolution of English culture, society, and ethics
and morals, which are actually the basis for civilization in a large part of the
world today.