Killer bees started in brazil in 1957.
A scientist in Sao Paulo wanted bees to make more honey, so he put forty- six African bees in with some Brazilian bees.
The bees started to breed and make a new kind of bee.
However, the new bees were a mistake . They did not want to make more honey; they wanted to attack . Then,by accident, twenty-six African bees escaped and bred with the Brazilian bees outside.