As it relates to The Mexican-American War (1846 – 1848), check all that are TRUE. Group of answer choices The war stemmed from the United States’ annexation of Texas in 1845. The U.S. wanted Texas as place for the expansion of slavery in America. The Treaty of Guadalupe Hidalgo, signed in 1848, ended the Mexican- American War in favor of the United States. As a result of the end of the war, the United States gained new territory, which in present-day includes: Texas, Oklahoma, Kansas, and Louisiana. The U.S. claims the Nueces River as the true border, while Mexico claims the Rio Grande as the border