Answer: All three if you count more currency as economic activity if not then land and resorces
Explanation: More land meant more power in imperilism, South africa ciceil rhodes diomond Congo king leopold rubber whic hare resorces India economy chia economy so these are my arguements but if your teacher is talking about ecomic stimulation by more currecy then mark that if not mark more land and more resorces hipes this helps god bless