<span>Prior to the Mexican American war president Polk sent John Slidell to Mexico to negotiate an agreement between that the Rio Grande River would be the southern border of Texas. ... The United States annexed the territory of California in 1848 following its victory in the Mexican-American War.</span>
Answer:
American spy planes photographed Soviet missile bases on the island. Have a good day
Explanation:
1. What were some reasons supporting up westward expansion, how’d it be if it americans?
2. What worker’s benefited more than others due to westward expansion?
The Civil War started because Abraham Lincoln was against slavery even though he had slaves and plus it also happened because of him signing the Ammendment of being against slavery even though he still had slaves.
The cultures that were mummifying people may have gotten supplies and had trade routes with Shang China.
