The Spanish Flu during WWI killed millions world wide.
In reverse order from least to most deadliest The Black Death The Plague of Justinian The Spanish Flu All three killed at least 100 million people
The most deadliest volcano is Mont Pelee
The most deadliest volcano is Mont Pelee
the most dangerous flu on Earth is h5n1 the bird flu it kills 60% of the people it infects. This virus mutated from a virus that could only affect birds, H5n1 is an epidemic across asia. The h1n1 flu is the next most dangerous flu. In the United States it's become an epidemic. The Swine flu h1n1 does not have a high death rate and this virus mutated from a virus that only affected swine or pigs. Most people that get h1n1 flu don't die, but without proper treatment it can start to kill you within 2 days. Swine flew symptoms are same as normal flew but more severe.
It is hard to define which is the deadliest hurricane. the hurrican happened in 1979 is the most deadliest hurricane.
r136a1
nuke
The Death Cap and The Destroying Angel are the two most deadliest mushrooms.
It depends on which type of aircraft. According to the Military Channel, the most deadliest aircraft include: The deadliest bomber planes are the B-29, the Thunderbolt A-10, and the Flying Fortress B-17. The deadliest helicopters are the AH-1 Cobra, and the Apache. The deadliest gunship is the AC-130 Spectre.
The most deadliest weapon today, as of September 2013, is going to be a matter of opinion. However, a nuclear weapon is probably the most deadliest of them all as it vaporizes everything in a certain radius and makes the area uninhabitable for years.
The one that kills you....