You have to be kidding, look in the yellow pages.
Yes. About one third of us that are adults do own guns. Legally.
About one third of them.
60% or so
Mexico US citizens can legally purchase guns from a gun dealer or from another individual. There are a few states that have restrictions, but most do not.
No, private citizens in China are not permitted to own guns. There are reports of private citizens who do own them, but this is done illegally.
Guns are tools and as such. do not provide us with anything by themselves. For example, asking "What do hammers provide for us" reveals the logical flaw in the question. The legitimate uses for guns by individual citizens are self defense, hunting, and target shooting. Gun ownership is guaranteed by by the Second Amendment to the Constitution.
The United States constitution Gives the right of US citizens to keep and bear arms.
Yes. Taking guns away from law abiding citizens does nothing to improve crime.
There are many guns in Angola, though most private citizens do not have one.
While private citizens in Germany did own guns, there have been many restrictions and limitations over the years. Prior to the start of World War 2, the German government began a program of registration, and later, confiscation of guns from private citizens. Citizens in Germany may own guns today, but again, with limitations.
Japan has a restriction on its citizens and will not allow them to purchase guns. The only guns citizens are allowed to have are shotguns. The police in Japan did not carry firearms until 1946.
The US Government through the US Constitution allows citizens to carry arms. The most popular gun owned in the US is the Colt M1911 followed by the Smith and Wesson number 10 revolver.