Archaeologists in Mexico have discovered a Mayan slave ship.
It is the first time this kind of ship has been found.
Scientists say the wreck is believed to date back to the 1850s.
Al Jazeera’s Manuel Rapalo reports from Mexico City.
Archaeologists in Mexico find first Mayan slave ship
Mexican scientists recently identified the vessel as 'La Union', believed to have gone down in September 1861.