While not trying to play the role of a JW here, even I can see through the irrelevance of those graphs.
The war deaths graph only goes back to 1945 while the poverty and life expectancy graphs go back to 1820 and 1541(early 1800's for some countries) respectively. Right off the top it looks like they're trying to paint a picture with graphs that unbalanced.
Better food production and distribution alone can account for much of the poverty and life expectancy improvements.