In order to promote the health, safety, morals, and the general welfare of the City of Strafford, Missouri, this Chapter divides the City into districts to regulate and restrict the height, number of stories, size of buildings and other structures, the percentage of lot that may be occupied, the size of the yards, courts and other open spaces, the density of population, the preservation of features of historical significance, the location and use of buildings, structures and land for trade, industry and residence or other purposes; and the erection, construction, reconstruction, alteration, repair or use of buildings, structures or land.