The overthrow of Santa Anna and the establishment of a civilian government by Liberals allowed them to enact laws that they considered vital for Mexico's economic development. It was a prelude to more civil wars and yet another foreign invasion. The Liberal Reform attempted to modernize Mexico's economy and institutions along liberal principles. They promulgated a new Constitution of 1857, separating Church and State, stripping the Conservative institutions of the Church and the military of their special privileges (''fueros''); mandating the sale of Church-owned property and sale of indigenous community lands, and secularizing education. Conservatives revolted, touching off civil war between rival Liberal and Conservative governments (1858–61).