Об­ра­зуй­те от слова POPULAR од­но­ко­рен­ное слово так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

His works have been translated into more than 40 languages and have sold tens of millions of copies in different countries. His ______ continues in the 21st century.