Simon Bolivar founded the Republic of Gran Colombia in 1819, uniting Colombia, Venezuela, and Ecuador after gaining their independence from Spain. This union was approved by Congress. However, the extensive territory and lack of communication made administration difficult. Cultural and geographic differences between the countries also hindered a shared national identity. As Bolivar fought to liberate other countries, Venezuela revolted. After his return, political conflicts increased and Venezuela and Ecuador separated from Gran Colombia in 1829 and 1830. Bolivar's goal of a united South America went unfulfilled as the nation dissolved after his death.