During the Mexican Revolution, there were no major battles but there were local clashes. In 1911, troops loyal to Francisco I. Madero entered Colima and suspended the state congress. After the war, social organizations that would mark Mexico’s development for much of the 20th century were created in Colima as well, especially ejidos, with the one in Suchitlán being the first. Another important movement was the creation of workers’ unions and cooperatives such as the Unión de Estibadores in Manzanillo. In 1919, President Venustiano Carranza created the Sociedad Cooperativa de Salineros in the city of Colima with the exclusive rights to extract salt from Cuyutlán Lake. These changes were imposed by federal authorities outside of Colima, leading to political instability within the state, especially during elections.