/kloc-the biggest "project" in the United States in the 0/9th century was the development of the western region, which made the originally sparsely populated western region an important part of the American economy, and the United States almost expanded its territory from the Atlantic coast to the Pacific coast. In the process of this change, advertising culture has played an important role in promoting. It introduced the land policy of the federal government in a vivid and easy-to-understand form, publicized the opportunity to get rich in the west, and attracted a large number of Americans to colonize the west. It also actively introduces the latest western products to consumers, establishes the belief that "the west symbolizes the future of the United States" in the eyes of Americans, stimulates a large number of Americans to emigrate to the west, and promotes the vigorous development of the western economy. As Americans say: "The earth-shaking changes in the West are directly related to advertising." The origin of American advertising culture can be traced back to the Pennsylvania Times, the first newspaper founded by politician and scientist Benjamin Franklin in the early 8th century. Before the large-scale development of the advertising industry in the 20th century, the American advertising culture in the19th century was not mature, and advertising was limited to individual selling, roadside posting, street sign notices, window notices, newspapers, magazines, wrapping paper and other forms, but it was full of vitality and played an extraordinary role in the westward movement.