Outcome of the Mexican-American War

During the mid-19th century, tensions between the United States and Mexico escalated, leading to the Mexican-American War from 1846 to 1848. The war was primarily fueled by American expansionism and the belief in Manifest Destiny, which held that the U.S. was destined to expand across the North American continent. One of the key issues that prompted the conflict was the annexation of Texas by the United States in 1845, which Mexico considered part of its territory. Which of the following was a direct result of the Mexican-American War?