Final answer:
There are approximately 114 Indian casinos in the U.S., operated by federally recognized tribes on their reservations.
Step-by-step explanation:
There are currently 562 federally recognized tribal governments in the U.S. These tribes have the authority to govern and police themselves, as well as collect their own taxes.
Many tribes have opened casinos on their reservations, offering visitors Las Vegas-style gambling. While it is difficult to determine the exact number of Indian casinos in the U.S., it is estimated to be around 114.