construction: process of the building or assembling of a building or infrastructure

building: structure, typically with a roof and walls, standing more or less permanently in one place

commercial building: building associated with any aspect of the various activities and business relationships of industry and trade

residential building: building mainly used for residential purposes

dirt road: unpaved road made from the native material of the land surface

Amazon rainforest: large rainforest in South America

public works: broad category of infrastructure projects, financed and constructed by the government

20th century: time period between January 1, 1901, and ended on December 31, 2000

Porto Velho: the capital of the Brazilian state of Rondônia, in the upper Amazon River basin

water reservoir: artificial or natural body of water used to collect and store water

trail: path with a rough beaten or dirt/stone surface used for travel

panorama: wide-angle view or representation of a physical space