Parabellum-> to wish for peace prepare for war. Guns can start wars but also make peace. To keep it simple, guns are around to keep order whether its on the offensive or defensive. They are also around because it is an advancement from more primitive weapons (swords, bow and arrow, etc).
how many types of guns are there in the world?
No there is not golden guns in World at war.
the machine guns
Only two; hand guns and long guns.
i think that millions of people have died by guns in the world
Guns are for protecton and many hunters eat the animals they shoot with guns.
Question is far too broad for a meaningful answer. Please rephrase. ALL guns are "in the world".
The answer to your question is not published in any one document. Generally, all the firearms in the world are in one of two categories; hand guns and long guns.
The higher level you are the more guns you get
yes, we have had guns since the 12th century
No way to answer- there are no world records.
Yes, they did have machine guns in WW2