If you're asking a biblical question, that would be Cain who killed his brother Abel.
If you're asking an anthropological question, there would be no "who", but more likely a "what". Animals have always killed for food. Some of the raptors of pre-historic times killed anything that they could find that might provide a tasty treat. Humans no doubt learned from being in that environment, and killed animals to provide for their families. How hard would it be to imagine that a person killed another to protect his family or to get the resources that he wanted?
Unless you want to accept the biblical explanation, we can never know who was the first person to kill another.
For fighting and killing and bloodshed and murder.
The devil invented kill every thing your wrong some dude invented it i don't no the name
/he envented it by killing Hitler
In late 180BC , Ancestors use this in killing animals for their food and for self defence
he invented the torsion catapult. As well as the balista along with other killing machines
-Developed of the ideas that tanks arnt just militart infantry supporters -Invented VW Car company -Invented a popular way of killing people
They felt very glad that Thomas invented it so they could stop killing animals for the candlelight.
It comes from hashashin in Arabic, who were warriors that consumed a toxic drug that made them into crazed killing machines.
Because they invented it, over a thousand years ago. Since then it's been pretty influential in the business of killing people.
Chickenpox affected history by killing off a large number of people. This occurred before a vaccine was invented to prevent the disease from occurring in humans.
Antiseptics were invented to prevent infections by killing or inhibiting the growth of microorganisms on living tissues. This advancement in medical science has helped to reduce the risk of infections during surgeries and wound care, ultimately saving lives.
Killing..Killing..Killing.. Well he can't masturbate, can he?