It would be helpful if you could tell us a bit more about what you need. What you have given us is not a question and does not really tell us what it is you want to know.
In general, alcohol has been a real danger to Native American societies ever since contact with the Europeans. Alcohol became one of the things that Europeans and Americans traded to the Indians in return for various goods.
Alcohol became a real problem because Native Americans are, genetically speaking, much less tolerant of alcohol than are Europeans. This meant that they became drunk more easily and became alcoholic more easily. Thus, drinking disrupted their societies more than it did for whites.
This trend continues today. I would argue that some of the problem today stems from lack of economic prospects on Indian reservatons, but some presumably comes from the genetic problem as well.