In this chapter:
(1) “Committee” means the Texas Historical Commission.
(2) “Landmark” means a state archeological landmark.
(3) “State agency” means a department, commission, board, office, or other agency that is a part of state government and that is created by the constitution or a statute of this state. The term includes an institution of higher education as defined by Section 61.003, Texas Education Code.
(4) “Political subdivision” means a local governmental entity created and operating under the laws of this state, including a city, county, school district, or special district created under Article III, Section 52(b)(1) or (2), or Article XVI, Section 59, of the Texas Constitution.