Except as otherwise provided in sections 1154 and 1156 of
this title, the term “Indian country”, as used in this chapter, means
(a) all
land within the limits of any Indian reservation under the jurisdiction of the
United States Government, notwithstanding the issuance of any patent, and,
including rights-of-way running through the reservation,
(b) all
dependent Indian communities within the borders of the United States whether
within the original or subsequently acquired territory thereof, and whether
within or without the limits of a state, and
(c) all
Indian allotments, the Indian titles to which have not been extinguished,
including rights-of-way running through the same.