What was the main purpose and outcome of the Slidell mission? President Polk sent John Slidell to offer to buy Texas from Mexico, but Mexico executed Slidell as an American spy.

President Polk ordered John Slidell to move his troops into disputed Mexican
territory, which sparked war with Mexico.

President Polk directed John Slidell to sell California to Mexico, but the Mexican government refused the offer and attacked the United States.

President Polk sent John Slidell to offer to buy large portions of the Southwest from Mexico, but Slidell was refused by the Mexican government.