Since the beginning of the periods of conquest and colonization, there were several rebel movements against Spanish rule, but most were either crushed or remained too weak to change the overall situation. The last one that sought outright independence from Spain sprang up around 1810 and culminated in the Colombian Declaration of Independence, issued on 20 July 1810, the day that is now celebrated as the nation's Independence Day. This movement followed the independence of St. Domingue (present-day Haiti) in 1804, which provided some support to an eventual leader of this rebellion: Simón Bolívar. Francisco de Paula Santander also would play a decisive role.