A: Extensive commercial grain farming area: The Prairies, USA.
B: Trans-Siberian Railway terminal station: Vladivostok, Russia.
C: Nomadic herding area: Sahara Desert, Africa.
D: Commercial livestock rearing area: Pampas, Argentina.
E: Major Asian sea port: Shanghai, China.
F: Major European international airport: Heathrow, London.
G: Major shipping canal: Suez Canal, Egypt.
