The Good, the Bad and the Ugly (1966) directed by Sergio Leone. He can be seen riding in the passenger seat on a carriage as the soldiers make their procession through a town. General Sibley appears as a minor character in Nando Cicero's Red Blood, Yellow Gold (1967), played by an uncredited Carlo Gentili. He is mentioned in the documentary The Man Who Lost The Civil War (2003), a special feature as part of MGM's release of a Leone DVD anthology in 2003.
The United States acquired a vast area of the Southwest with the Treaty of Guadalupe Hidalgo (May 30, 1848), which included all or part of the following states: Arizona, California, Colorado, Nevada and New Mexico, Texas and Utah. As part of the treaty, Mexico agreed to sell the land (more than 1,000,000 square miles) to the United States for $15 million. The U.S. also agreed to pay any indemnities. The southern border of said lands was 34 degrees north latitude. Then-President Franklin Pierce had achieved a railroad right-of-way through the southern part of what is now Arizona.
But it wasn’t until 1853 that a clear border existed between the United States and Mexico. After five years of wrangling, the two countries agreed on a southern border for the territory of 31 degrees latitude with the Gadsden Purchase The transaction was named for the Southern railroad man, James Gadsden. Mexican President Santa Ana signed the agreement, in which Mexico surrendered 29,640 square miles for $10 million. The purchase completed manifest destiny. President Polk had added more territory to the United States than any president other than Thomas Jefferson with his Louisiana Purchase.
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