Which of the following statements about economic growth is accurate?
a) the world’s sustained economic growth has only been occurring over the last 300 to 400 years.
b) economic growth has been shared equally among all the countries in the world since the start of the most recent generation.
c) countries in africa and south america are responsible for most of the economic growth in the world since the 1600s.
d) sustained economic growth has been occurring since the start of the roman empire.