implied variation + ghost transitioning 

1) slave-related, then worker-related, use of the word "rule" written into stories (starting in the 1700's?), justifies & assists

 

2) previously existing (?) "reins" usage of the verb "to control,  viz.  "ctrl. reins, "ctrl. horses, "ctrl. carriage, "ctrl. luge, "ctrl. realm;

 

3) variation (in this case, a sort of expansion in range) is implied, :  "to ctrl."  as in "to orchestrate, ~grab reins, ~hold land claims, ~maintain political relationships, (eagle's claw on $ bill) persists,     yet alongside "to ctrl." as in "to ctrl. device, ~ctrl. machine, ~ctrl. slaves, with the meaning of the first newly capable of being shaded with the meaning of the second, as justified via the changes elsewhere (in 1 & 2 above)-- this is what i am labeling "ghost transitioning. When could this be seen as having clearly been established? I'll guess 1900's, early.