Question

what all techniques were used to kill the Jews

Answer 1

they had begun to methodically kill Jews inspecially constructed killing centers, German officials ... the Auschwitz-Birkenau killing center played a significant role in the German plan to killthe ... deportation of European Jews to killingcenters (also known as “extermination camps”) already in operation or ... reality, the "resettlement" in the "East" became a euphemism for transport to the killing centers and mass.
-HOPE THIS WILL HELP U <3

Answer 2

Deportation to killing centre
Concentration camp system
Gasing operations
Ravenbruck
Glossary