If I write a book series, should I copyright the series title? Or would that be a trademark I should apply for?
For example, if my series were about.. idk the history of the paper industry in countries all over the world....
If my first book were called "The Pages of American History"...or something... and then my second book was called "The Pages of Peruvian History"... and so on and so on with that same series theme... should I / can I legally, trademark/copyright that title?
Thank you so much for your help!

