There are 6 billion people in the world, ONE person dying doesn't really impact anything except for personal relatives and friends. Unless, if you are a president or king, it is going to impact a country. But, can a single death affect the whole world? I don't think it has yet happened.
The murder of Archduke Franz Ferdinand triggered World War 1.
9/11 started the 'War of Terror', which started a complete change in Civil-Liberties for all of us(airport controls, triggered a bunch of wars(which changed the lives of soldiers, and their families), but also NSA/GCHQ spying on ALL of us).
There was a terrible tragedy that will grieve the world---for ever. We were to be given ONE person, who was to be the brilliant research scientist who found the cure for cancer. The number of human lives would have reached into the hundreds of millions-----lives that would have been saved. She was bullied into suicide last week. She was nine years old.
Did he say he can't think of a death that could affect the entire world? You can start at hitler....maybe
Jesus
Martin Luther King - killed by CIA they say
JFK - killed by the fed for taking back control of US money
Jesus, all be it numerous years later, plus he never existed, still a big impact though
Any deaths that had a huge impact on the world? Nothing like Steve jobs since apple is still going and stuff thanks,