The nazi ss officer who implemented the deportation of millions of jews to concentration camps was he escaped to argentina but was captured by israeli secret agents in 1960; then tried and executed in israel.

His name was Otto Adolf Eichmann                                  

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.