colportage
/kɔlˈpɔrˌtɑːʒ/ or /kɔlˈpɔrˌtɑːʒ/; French: /kɔlpɔʁtaʒ/ or /kɔlpɔʁtaʒ/Definitions
1. noun
The act of distributing and selling books, tracts, or other printed matter, especially religious literature, from door to door or in other public places.
“The missionaries engaged in extensive colportage to spread their message to the local communities.”