For the benefit of the Town of Littleton, Massachusetts, and to keep our Town a good place in which to live and work, preserve its historic rural character and its agricultural open land, and for the purposes stated in Chapters 40A, 40B and 41 of the General Laws as amended and under the authority thereof and Article 89 of the Amendments to the Constitution, the use of land, buildings and structures in this Town is hereby regulated as herein provided.