The correct answer is letter D.
The Mexican War was an armed conflict between Mexico and the United States between 1846 and 1848, the immediate cause of which was the US annexation of Texas territory in 1845. The Treaty of Guadalupe Hidalgo was signed by US diplomat Nicholas P Trist and the representatives of the Mexican government, Don Luis Gonzaga Cuevas, Don Bernardo Couto and Don Miguel Atristian.
To establish peace relations between countries and end the war, this treaty was proclaimed. In general terms, the document defined the surrender of part of the Mexican territory to the United States, including California, and in return the payment of a $ 15 million indemnity.