How much did the Polk offer to buy New Mexico and Texas?

President James K. Polk offered $25 million to Mexico for New Mexico and Texas during negotiations in the 1840s. However, the Mexican government refused the offer, leading to heightened tensions between the two nations. This refusal contributed to the outbreak of the Mexican-American War in 1846. Ultimately, the U.S. acquired these territories through the Treaty of Guadalupe Hidalgo in 1848, but not through the initial purchase offer.