In 1821 Panama left Spain without a shot, its merchants paying the royalist garrison to sail home, and joined Bolívar's Gran Colombia. Bolívar called the isthmus the emporium of the world, yet rule from distant Bogotá left it taxed and neglected. Two attempts at separation in 1830 and 1831 failed.
Historians point mainly to internal rivalries, distance and Gran Colombia's own breakup, rather than Anglo-American sabotage, to explain the failure of the 1826 Congress. Panama's 1821 union with Gran Colombia is usually called voluntary but was shaped by fear of Spanish reconquest. Readings of Espinar's motives range from loyalty to opportunism.