currency –n. the money that a country uses

sector –n. an area of an economy; a part of an economy that includes certain kinds of jobs

cheap –adj. not costly

infrastructure –n. basic equipment and structures such as roads and bridges that are need for a country, area or organization to work

cargo –n. something carried from one place to another by boat or plane

chain –n. a series of thing or people that are connected to each other in some way