oxen: castrated adult male cattle

Amazon rainforest: large rainforest in South America

group of humans: any set of human beings

crane: type of machine specialised in lifting objects

cargo ship: ship that carries cargo, goods, and materials onboard from one port to another

road transport: collective term for all forms of transport which takes place on roads, or (ground) surface, except railroads

Porto Velho: municipality of Rondônia state, Brazil

wharf: structure on the shore of a harbor or on the bank of a river or canal where ships dock

Madeira River: river in Bolivia and Brazil

worker: person who works

railroad car: vehicle used for carrying cargo or passengers on rail transport system

railway: interconnected network of infrastructure and vehicles used for train rail transport