1. what was the significance of interchangeable parts?

it made farming less profitable.
it made it possible to produce items in large numbers.
it increased the demand for slave labor.
it undermined the factory system.

During the invasion of the soviet union, the einsatzgruppen did which of the following? killed large numbers of jews, as well as many locals. led military troops. eliminated local administration in lithuania. took over many administrative functions in the war effort. planned and organized extermination camps.