Simplify the following text for a Grade 12 native English-speaking person.
Original: It is a network of four art museums : Tate Britain , London ( previously known as the Tate Gallery , founded 1897 ) , Tate Liverpool ( founded 1988 ) , Tate St Ives , Cornwall ( founded 1993 ) and Tate Modern , London ( founded 2000 ) , with a complementary website , Tate Online ( created 1998 ) .
Simplified: It is a group of four art galleries in England : Tate Britain ( opened in 1897 and renamed in 2000 ) , Tate Liverpool ( 1988 ) , Tate St Ives ( 1993 ) and Tate Modern ( 2000 ) , with a website , Tate Online ( 1998 ) .