Final answer:
Spain abolished slavery in Cuba in 1886, influenced by the economic value of sugar plantations and uprisings by rebels, marking a significant event in the fight against colonialism and for human rights.
Step-by-step explanation:
Spain finally abolished slavery in Cuba in the year 1886. This was after a period during which various nations in the Americas, including the United States and Brazil, moved towards the abolition of slavery (the United States in 1865 and Brazil in 1888).
Slavery's persistence in Cuba was influenced by the island's valuable sugar plantations, leading to a late abolition compared to its neighboring countries. The end of slavery in Cuba was partly accelerated by uprisings led by free and slave rebels. The formal end of slavery in Cuba was seen as a pivotal moment in the fight against colonialism and marked a significant step towards greater human rights in the region.