question 13

1. the industrial revolution started however america was just starting as a country.
2. the USA became a thriving country and surpassed the UK in 1903 by building factories and cars.
3. in 1929 the great depression hit the USA and co2 drooped.
4. china entered the race about in 1990.
5. the USA has a higher standard of living from having more then one car to having large house. most people in china take public transport or have on family car.
6.areas of Trinidad were leased to the U.S.A to set up Air, Naval and army bases during World War Two. 
7. Luxemburg went up because of rebuilding efforts after the war.
8.The small countries have very few people but their average usage is higher.