Sentence:  In other words , the promulgators of the murder plan made clear that physically exterminating the Jews was but an extension of the anti-Semitic measures already operating in every phase of German life , and that the new conspiracy counted on the general anti-Semitism that had made those <WSD>measures</WSD> effective , as a readiness for murder . 
Meaning of the word marked with <WSD> tags:  any maneuver made as part of progress toward a goal