Life expectancy saw steady improvement after world war 2 in all of the following regions except

Sub-Saharan Africa.

Explanation:

What this map shows is that all regions of the world experienced a steady improvement in life expectancy after World War II, except for Sub-Saharan Africa. We can see that during the 1990s, the life expectancy of the region began to decline, while most of the world thrived. Although there are many economic and political reasons for it, one of the major problems of the region was the AIDS epidemic, which claimed many lives. The region continues to struggle with this problem nowadays.

the influence of charles louis de secondant , baton montesquieu.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.