Torn Asunder: Republican Crises and Civil Wars in the United States and Mexico, 1848-1867

In 1848, the Treaty of Guadalupe Hidalgo ended the Mexican-American War and dramatically reshaped North American geopolitics by ceding half of Mexico’s territory to the United States. In the following decades, as conflicts over slavery in the United States and over the nature of nation, state, and religion in Mexico overwhelmed politics, both republics collapsed into civil war. In Mexico, internal conflict sparked foreign intervention and the establishment of monarchical rule under an Austr...