young people are not having children
There are many plausible answers to this question, asssuming there is agreement regarding the 'decline' of 'Italy.' One factor is the Black Death which swept much of the Europe between 1348-50 and killed apporximately 30-60% of the population.
Italy has one of the lowest birth rates in Europe and the World. It has been declining for years and in 2013 was at it's lowest level in recorded history. At the current time population decline has leveled off due to massive immigration aimed at stemming the decline. The immigration birthrate is higher than the natural birthrate also keeping population from imploding. Population growth is about zero in Italy.
The decline of moose population followed sooner or later by a decline in the wolves population because the is less for the wolves.
There was a decline in the population as a result of the war.
In the Great Lakes area, moose are often a large part of the diet of wolves. Therefore a decline in the wolf population would naturally follow the decline of the moose population on Isle Royale.
Italy.
The population of Italy in 2016 was 60.6 million.
Italy.
Many countries like Japan, Germany or Italy have a natural population decline due to very low fertility rates, while other countries like Russia ans Eastern Europe are low fertility rates as well as a declining life expectancy. Cuba's population decline is mostly from emigration to nearby Florida, as well as Namibia's population decline due to HIV/AIDS.
In 2008 the population of Italy was about 59,600,000.
italy
disease.