stimulation

US /ˌstɪm.jəˈleɪ.ʃən/
UK /ˌstɪm.jəˈleɪ.ʃən/
1.

sự khích thíck, sự khuyến khích, sự quyến rũ

encouragement of something to make it develop or become more active.

:
the stimulation of a revolution in intelligence affairs