Answer: sorry what are you trying to say!
Explanation: :)
Constituían una sociedad secreta con connotaciones políticas, practicantes de artes marciales. Su objetivo era expulsar a los extranjeros de China. En 1899 emprendieron una campaña de terror por el norte del país que, inicialmente, se dirigió contra misioneros cristianos.
The factor that effects the maximum range is Altitude
I believe the answer is Gold.
Gold was a very hot commodity at that time because before we use paper/digital money like today, Gold was made as material to make a type of money with more intrinsic value.
The abundance of this natural resources led to many European empire came and started their colonization in AFrica.
