Benjamin franklin's ability to rise from the status of a poor candlemaker's son to a respected member of the colonial upper class and a man of great wealth is an exam- ple of

Social mobility
It is the movement of an individual or household from one strata of society to a higher strata. it can be necessitated by several factors such as impeccable talents such as beauty,skills or charisma. this is only possible in an open stratification system that recognizes achieved status.
 

Probably japan. they got a really high life expectancy.