1750
Air bags have prevented approximately 50,457 deaths since their introduction in 1986.
The apostles could have prevented their enforced deaths by denying Christ. Even then they would have died eventually since it is the result of sin.
Since addison's disease has no direct cause, it cannot be prevented.
Since its discovery, AIDS has caused nearly 30 million deaths (as of 2009). As of 2010, approximately 34 million people have contracted HIV globally.
Actually, it cannot be prevented since a piece of chromosome 4 is missing. The only way it can be "prevented" is by the sperm and egg to form properly, but that is by random.
200,000,000,000
Since unknown deaths are unknown, it is obvious that nobody knows how many there are.
The Isle of Man TT. 240 deaths since 1907.
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There is no known prevention since the disease is secondary to an accident.
The machine gun was first introduced in World War II. This was the first war with massive numbers of casualties due to destructive weaponry and guerilla warfare, among other causes. It is impossible to pinpoint exactly how many deaths the machine gun has caused since its introduction, or even in that war alone.
There have been 16.