Final answer:
The Germans used flamethrowers to burn down the Warsaw ghetto as part of their effort to crush the uprising and maintain control.
Step-by-step explanation:
In the book Resistance, the Germans brought in flamethrowers to burn down the Warsaw ghetto. Flamethrowers were first introduced by Germany with substantial use beginning in 1915, intended to force enemy soldiers out of their trenches during battle and they had a significant psychological effect. During World War II, particularly in the Warsaw ghetto uprising, the Germans used these horrific devices as a method of crushing the Jewish resistance, systematically burning down buildings to force individuals out of hiding and effectively quash the uprising. This act represented one of the many brutal tactics employed by the Nazis to suppress resistance movements and maintain their regime of terror across occupied territories.