Sucre, who won many battles for Bolívar, went on to liberate Ecuador and later become the second president of Bolivia. Venezuela remained part of Gran Colombia until 1830, when a rebellion led by Páez allowed the proclamation of a newly independent Venezuela, on 22 September; Páez became the first president of the new State of Venezuela. Between one-quarter and one-third of Venezuela's population was lost during these two decades of warfare (including perhaps one-half of the white population), which by 1830, was estimated at 800,000.