Once the private hunting ground of royalty and their guests, Chitwan became a national park in 1973 and has been designated by Unesco as a World Heritage Site.
Chitwan was made a World Heritage Site after it became a national park.
mnli hypothesis: Chitwan was made a World Heritage Site after it became a national park. premise: Once the private hunting ground of royalty and their guests, Chitwan became a national park in 1973 and has been designated by Unesco as a World Heritage Site.