Why the mexican-american war had social, political, and economic

This is a Chicano studies class. This is a book review/report essay on ″Glorious Defeat by Timothy Henderson″. In four typed pages plus the works cited page write an essay in MLA style format. You will have an option to choose one prompt from the three options: 

1. Why did the war go so tragically for Mexico? 

2. Why Timothy J. Henderson in his book A Glorious Defeat. Mexico And Its War With The United States, develop a horrific picture of an apocalyptic 19th century Mexico and its northern territories? 

3. Why did the Mexican-American war have social, political, and economic consequences between Mexico and the United States?