This not only tells you so but it also tells you why socialism has been a deadly and demoralizing failure. Many millions died in gulags and many, many more were demoralized in less than 2 centuries of experience. Yet our “intelligentsia”, our progressives, still embrace socialist measures rather than free market capitalism.
From Gary North at mises.org:
What is the longest-running socialist experiment? What has its success been? If someone asked you to defend the idea that socialism has failed, what would you offer as your example? Where did modern socialism begin?
That's right: in the land of the free and the home of the braves. On Indian reservations. They were invented to control adult warriors. They had as a goal to keep the native population in poverty and impotent.
Did the system work? You bet it did. Has the experiment been a failure? On the contrary, it has been a success.
When was the last time you heard of a successful Indian uprising? Are the people poor? The poorest in America. Are they on the dole? Of course.
Last year, the US Department of Agriculture allocated $21 million to provide subsidized electricity to residents on the reservations whose homes are the most distant from jobs and opportunities. You can read about this here. This will keep them poor. Tribal power means tribal impotence.
The tribes are dependent. They will stay dependent. That was what the program was designed to achieve.