 Haiti is the world's oldest black republic and one of the oldest republics in the Western Hemisphere.Although Haiti actively assisted the independence movements of many Latin American countries – and secured a promise from the great liberator, Simón Bolívar, that he would free their slaves after winning independence from Spain – the nation of former slaves was excluded from the hemisphere's first regional meeting of independent nations, held in Panama in 1826.Furthermore, owing to entrenched opposition from Southern slave states, Haiti did not receive U.S. diplomatic recognition until 1862 (after those states had seceded from the Union) – largely through the efforts of anti-slavery senator Charles Sumner of Massachusetts.