Answer:
The casino business
Step-by-step explanation:
The casino business has rapidly expanded in Native American reservations. There are two main reasons for this:
- Native American reservations have a great degree of sovereignty, even if they legally belong to the states. For this reason, the states cannot forbid gambling in the reservations.
- Casinos are a good source of income for the reservations, which have a poverty rate higher than the U.S. average.
Currently, there are over 400 casinos in Indian Reservations, operated by over 200 tribes. They leave an annual revenue of over $20 billion of the tribes.