The gas van was an extermination method devised by Nazi Germany to kill their victims during World War II. Look up Genocide on Wiktionary, the free dictionary Genocide means mass murder of a particular ethnic group. ... Nazi Germany, or the Third Reich, commonly refers to Germany in the years 1933–1945, when it was under the firm control of the totalitarian and fascist ideology of the Nazi Party, with the Führer Adolf Hitler as dictator. ... World War II was a truly global conflict with many facets: immense human suffering, fierce indoctrinations, and the use of new, extremely devastating weapons like the atom bomb World War II, also known as the Second World War, was a mid-20th-century conflict that engulfed much of the globe...

It was a vehicle with an air-tight compartment for victims into which exhaust fumes were transmitted while the engine was running. As a result the victims were gassed with carbon monoxide, resulting in death by carbon monoxide poisoning. Carbon monoxide, chemical formula CO, is a colourless, odourless, flammable and highly toxic gas. ... Carbon monoxide, chemical formula CO, is a colourless, odourless, flammable and highly toxic gas. ...

Gas vans were used until more "effective" extermination methods were put into use.

Sources

• The Development of the Gas-Van from the Jewish Virtual Library