How does The Thirty-Nine Steps develop the theme of Xenophobia and Prejudice?

The Thirty-Nine Steps by John Buchan develops Xenophobia and Prejudice across the chapters the companion marks for this theme.

The book reflects early 20th-century fears of foreign powers, particularly Germany, and includes anti-Semitic stereotypes in Scudder's description of Jewish financiers controlling world events.

Scudder's explanation of the conspiracy includes antisemitic and xenophobic tropes, blaming Jews and foreigners for plotting global chaos.