completion of the first step

finish up the first stage

collapse / a market crash

to collapse / for a market to crash

(programming) constructor

Alternative spelling of 転落

Alternative spelling of 転落

a fall, falling down / a slide down to a lower rank / a personal decline, a descent into personal destruction

tumble, fall down / slide down in a ranking / descend into personal decline

short, short circuit / a leap in logic (that skips steps), a jump to a conclusion