What is the origin of the idiom "raw deal" and when to use it?

The exact origin of the idiom "raw deal" is not definitively known, but it is believed to have emerged in the United States during the early 20th century. It is associated with American English and has been commonly used in informal speech and writing. The phrase gained popularity and became more widely known through its usage in various contexts, including literature, film, and everyday conversations. The phrase is commonly used in informal conversations, everyday discussions, or even in more formal contexts to express a sense of dissatisfaction or a perception of being on the receiving end of an unjust treatment.