Which convention regulates liability for air carriers who cross boundaries?

The Warsaw Convention is the correct choice as it specifically addresses issues of liability for air carriers in international operations. Established in 1929, it set a framework for the international carriage of persons, baggage, and cargo by air. The convention aimed to provide consistency in liability rules across member countries, which was important for regulating compensation in the event of accidents or delays involving air travel across national boundaries.

This convention established a system of strict liability for carriers, with set limitations on damages, which means victims can seek compensation without proving negligence from the carrier. The idea was to protect passengers while also allowing carriers to operate under predictable rules regarding liability.

Other conventions mentioned, like the Tokyo Convention, primarily deal with offenses and certain safety regulations on board aircraft but do not specifically address liability. The Chicago Convention focuses on the principles of international civil aviation and the establishment of the International Civil Aviation Organization (ICAO), while the Montreal Convention, which was adopted later in 1999, updates and modifies some of the principles laid out by the Warsaw Convention, yet it is not the one specifically developed at the time of the Warsaw Convention's creation.