Answer:
Producers use advertising cause it just brings and attracts customers to your business and increases your sales. When consumers see a good looking and positive advertisement they will be more disposed to buy.
Grain is used to feed cattle and livestock because it is healthy, cheap, ethical, and easy to grow in some American climates. Grain is the easiest and most cost-efficient way to feed livestock.
Texas was annexed by the United States in 1846 and war broke out again with Mexico, Lamar joined the U.S. Army. He fought in the battle of Monterrey and helped organize a municipal government in Laredo. In his later years, Lamar traveled, wrote poetry, and spoke out in support of slavery in the South.