How did The Avengers die?
The Avengers die because of Doctor Pym's and Tony Stark's
creation Ultron. Iron Man and Henry Pym created Ultron to be a
force for peace, but its programming evolved coming to think that
the only way to truly bring order to Earth was to control it. Then
it attacked the Avengers killing most of them (Captain America,
Wasp, Hawkeye, Black Panther, Giant-Man, and Black Widow). Before
they died however, Iron Man gathered their children and took them
to a safe place in the Arctic Circle. Later, when James
accidentally activated the Iron Avengers, Ultron detected the
energy source, found the Iron Avengers, and took control of them.
He later captured Iron Man and imprisoned him in the Citadel. The
children rescued him and escaped with some help of Hawkeye's son
Francis and the Scavengers (all that remains of humanity). In the
desert, James turned on the ship that he, his friends, Iron Man and
Betty escaped in to lure Ultron to the Hulk. The evil robot arrived
and battled the Hulk, knocking him out. He then blasted at James
with a energy blast which nearly killed the boy. The Hulk grabbed
Ultron, beat him and ripped him in half. When Ultron started to
rebuild himself, Torunn - daughter of the absent Thor and "http://wiki.answers.com/wiki/Sif_(Marvel_Comics">http://wiki.answers.com/wiki/Sif_(Marvel_Comics
- grabbed the two separated pieces and threw them into space where
Ultron could not rebuild himself.