Argentina has a detailed literary history, as well as one of the region's most active publishing industries. Argentine writers have figured prominently in Latin American literature, since becoming a fully united entity in the 1850s, with a strong constitution and a defined nation-building plan. The struggle between the Federalists (who favored a loose confederation of provinces based on rural conservatism) and the Unitarians (pro-liberalism and advocates of a strong central government that would encourage European immigration), set the tone for Argentine literature of the time.