En el siglo XIX se pusieron de manifiesto diversas expresiones de las artes que evidencian la identidad cultural puertorriqueña. En el caso de la literatura, ¿cuál fue la obra y el autor de un
libro que presenta un cuadro de costumbres puertorriqueñas y que se publicó a mediados del
siglo XIX?*

President nixon's trip to china included apex

Which best describes the impact of the crusades on european exploration?

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.