Final answer:
The belief that it was America's divine or God-given right to annex Texas is best understood within the context of the expansionist movement in the United States during the 1840s, known as 'manifest destiny.' Many Americans saw the annexation of Texas as the next logical step in the westward expansion of the United States. The border dispute between the United States and Mexico over Texas and the expansionist desires of the United States were primary factors that led to the Mexican-American War.
Step-by-step explanation:
The belief that it was America's divine or God-given right to annex Texas is best understood within the context of the expansionist movement in the United States during the 1840s. This movement, known as 'manifest destiny,' promoted the idea that American expansion was justified, inevitable, and divinely foreordained.
Many Americans saw the annexation of Texas as the next logical step in the westward expansion of the United States. They believed that it was their destiny to expand across the continent and bring American values and institutions to new territories.
The annexation of Texas and the Mexican-American War were deeply intertwined. The border dispute between the United States and Mexico over Texas and the expansionist desires of the United States were primary factors that led to the war. The United States claimed the Rio Grande as the border, which would lay claim to a substantial portion of Mexico outside of Texas. From a Mexican perspective, it appeared that the United States had invaded their nation.