The bill of lading is a crucial document in the shipping industry that serves as a contract between shippers and carriers, providing proof of receipt, evidence of a contract of carriage, and a document of title. It originated in the 13th century, evolving alongside maritime trade and law, with significant amendments leading to the formalization of rules in the early 20th century. Its functions and legal status were shaped by influential legislative changes, especially the Hague Rules established in 1924.