Whether the attainment of independence is different from revolution has long been contested, and has often been debated over the question of violence as legitimate means to achieving sovereignty. In general, revolutions aim only to redistribute power with or without an element of emancipation, such as in democratization "within" a state, which as such may remain unaltered. For example, the Mexican Revolution (1917) chiefly refers to a multi-factional conflict that eventually led to a new constitution; it has rarely been used to refer to the armed struggle (1821) against Spain. However, some wars of independence have been described as revolutions, such as the ones in the United States (1783) and Indonesia (1949), while some revolutions that were specifically about a change in the political structure have resulted in breakaway states. Mongolia and Finland, for example, gained their independence during the revolutions occurring in China (1911) and Russia (1917) respectively. Causes for a country or province wishing to seek independence are many, but most can be summed up as a feeling of inequality compared to the dominant power. The means can extend from intended peaceful demonstrations as in the case of India (1947), to a violent war as in the case of Algeria (1962).