Which country was ahead of all others until about 1860?
What two countries were close behind?
Highlight Brunei. What color is Brunei? What happens steadily until about 1979? What do you think explains this occurrence?
Find the United States. What color is the United States on the chart?
What year do you see a significant dip in life expectancy? What happened that year?
When do we see the second significant dip? What explains that dip?
Now look at income (wealth). When did we see a significant shift backwards with regard to wealth? What explains the shift?