What is modern travel literature? And who is different from old travel literature books that wrote in 1950-1960-1970?

What is modern travel literature? And who is different from old travel literature books that wrote in 1950-1960-1970?

To be more specific: in the course, we read The Arabian Sand is a 1959 book by Wilfred Thesiger. Dervla Murphy Where the Indus is Young in 1975- East is West by Freya Stark in 1945.

So, explain what’s modern travel literature and define it. The characteristics of it. Example of books that going under the modern travel literature category. Then say how it is different from old travel literature and the book we read in the class as well.
(you can be creative because there are no instructions to be followed. it JUST about modern travel literature)