Complex sentence: Some activists have supported the legalization of alcohol sales on the reservation so that the tribe can keep the revenues to support building a treatment center and founding more programs, as well as to directly regulate and control the sales, as other tribes have done.
Split into simpler sentences: Some activists have supported the legalization of alcohol sales on the reservation so that the tribe can keep the revenues. These would support building a treatment center and founding more programs, and the tribe could directly regulate and control the sales, as other tribes have done.