It can be down to a numorous amount of differences such as climate, poverty, road congestion, crime, availabiltiy of decent health care and many, many other reasons. For example, in countries where there is a much higher national crime level, the life expectancy will varie. A rich country does not nessecarily have a long life expectancy due to people in rich countries generally being more unhealthy and having a higher Death Rate due to high fat content and smoking related illnesses
because different countries have different economic strenghts.
Because they are different countries. They originallY had the same,but then stuff happened and the Japanese changed theirs a bit.Same thing about the Koreans.
So that others may experience different countries and then they know which countries have been found/recognized before
Religious intolerance is a source of severe conflict, and should be avoided when possible, however, if a religion is engaged in criminal activity such as murder, that cannot be tolerated even if it is done for a religious reason.
The reason is that currencies in different countries developed independently of one another. Sure, they can be made equal, but that would basically mean several countries having a single currency. The best example that this is possible is the Euro. You might think of this as a prototype for a future world currency.
Pakistan and india are two different countries ,The main reason of their enemy is there religionship
For the same reason different countries export other goods. Australia just happends to have more gold available than other countries.
Because they are very old
40 to 49
40 to 49
There is a long term slowdown in the birthrate.
most vietcong or a.k.a "Charlie". maybe rebels from different countries fighting for no reason at all