Mexico.
sometime in the 1840's
The Mexican-American War was a land dispute over Texas, New Mexico and Baja California.
The United States annexed Texas.
His campaign slogan, "54 forty or fight" referred to his goal of settling the boundary dispute with Britain over the Oregon Territory. He may have had a more hidden agenda of adding California to the US and fixing the border of Texas.
No. The Alamo was a battle in the Texas Revolution, where Anglo settlers of Texas (most from America) were rebelling against Mexico. Texas at that time, 1836, still belonged to Mexico. The Texans eventually won that war and became independent of Mexico. Texas was an independent nation for about ten years. Then the Texans decided to join the US. A dispute over the southern boundary of Texas brought on the US-Mexican War of 1846-48. Lee did fight in this later war.
dispute
dispute
The dispute over where the Oregon boundary was located was between the United States and Great Britain. They were in disagreement on where the boarder between Oregon and Canada should be drawn.
When the U.S. and Mexico could not agree on the boundary between Mexico and Texas, tensions escalated, ultimately leading to the Mexican-American War in 1846. The dispute primarily centered around whether the Rio Grande or the Nueces River should serve as the border. Following the war, the Treaty of Guadalupe Hidalgo in 1848 established the Rio Grande as the official boundary, resulting in significant territorial gains for the United States. This conflict intensified the debate over slavery in the newly acquired territories, contributing to the sectional tensions leading up to the Civil War.
Neighboring countries disagree over boundary policies.
At the outbreak of the Mexican-American War in 1846, the province claimed by the United States was Texas. Texas had declared independence from Mexico in 1836 and was annexed by the U.S. in 1845, which heightened tensions between the two nations. The dispute over the border, particularly the claim that the Rio Grande was the southern boundary of Texas, further escalated the conflict.