From the mid-nineteenth century onward, governments across Latin America founded departments offomento, or development, to promote economic growth and modernization. This article looks at the evolution of this department in Mexico and the ways in which it integrated infrastructure, migration, land policy, science, and education into a rural economic and social project. For Department of Fomento leaders, agriculture became the connective tissue linking peace to prosperity. Though many failed, initiatives aimed at increasing the diversity of Mexico's rural production illustrate a concerted effort to avoid top-heavy monoculture and use scientific planning to stabilize and unify the nation.