Explain the legal character and importance of the bill of lading.

The transaction's web: the sale (Unit 2) → the carriage (the transport contracts) → the documents (the B/L-and-others) → the payment (Unit 4's credits' conditions) → the customs-and-insurance faces — the single transaction's chain; the law's task: each link's allocation of risk, cost and liability. The landlocked Nepal's stake: the transit's dependence (the India routes-and-ports; the China corridor's development) — the trade's geography shaping its law.