(a) This section applies to:
(1) the making of the appropriate general plan;
(2) any part, amendment, extension, or addition to the plan;
(3) the protection of and the carrying out of the plan; and
(4) the exercise of any:
(i) planning, zoning, or subdivision control powers in the regional district; and
(ii) other powers granted in this title to the Commission or to the Montgomery County Council or the Prince George’s County Council.
(b) The purpose of the plan is to:
(1) guide and accomplish a coordinated, comprehensive, adjusted, and systematic development of the regional district;
(2) coordinate and adjust the development of the regional district with public and private development of other parts of the State and of the District of Columbia; and
(3) protect and promote the public health, safety, and welfare.