सोनाब कलरेदा त्रिएटि अफ गवालुप हिदलग' जों मेकसिकनिफ्राय लाजादोंमोन , जाय 1848 मायथायाव मेकसिकान दावहाखौ थुंनो होदोंमोन ।
Western Colorado was obtained from Mexico which had won its independence from Spain by the Treaty of Guadalupe Hidalgo which ended the Mexican War in 1848 .