Abolition Of Slavery: Key Dates & Acts Around The World
by Miss Kelli Harris IV May 06 2025
Can we truly comprehend the depth of suffering endured during the era of slavery? The abolition of slavery, a monumental shift in human history, unfolded gradually across the globe, marked by persistent struggles and landmark legislation that forever altered the course of civilization.
The echoes of the transatlantic slave trade, a period of immense human suffering, resonate even today. Yet, it is equally important to acknowledge the relentless efforts to dismantle this barbaric system. The British Parliament, under the leadership of Prime Minister Earl Grey's Whig government, took a decisive step in 1833 by abolishing slavery in the British Empire, although the actual freeing of enslaved individuals was delayed until the following year. This legislative act, a culmination of years of advocacy, paved the way for a broader movement toward human liberation.
In 1807, after over two decades of persistent campaigning, the British Parliament passed the Abolition of the Slave Trade Act. This act, a watershed moment, outlawed the buying and selling of enslaved people throughout the British Empire. The impact of this act was significant, setting the stage for the eventual complete abolition of slavery.
The fight against slavery wasn't confined to Great Britain. The end of slavery arrived at different times in various parts of the Americas, with the middle decades of the 1800s marking a turning point for many. From the 1820s through the 1860s, nations such as Great Britain, France, the United States, and independent Spanish American countries took measures to outlaw slavery, each step a victory in the fight for human rights.
The Northwest Ordinance stands as a significant event, having banned slavery in the newly organized territories ceded by Virginia. Organizations like the Society for Effecting the Abolition of the Slave Trade, founded in London, played a crucial role in galvanizing the abolitionist movement. In Philadelphia, free Black individuals established the Free African Society, demonstrating the resolve to self-determination and mutual support.
An important act had been passed in Britain on 25 March 1807, called the Abolition of the Slave Trade Act, which, while not abolishing slavery itself, prohibited involvement in the slave trade. The Slavery Abolition Act of 1833 officially abolished slavery throughout most of the British Empire, though it was implemented gradually over the next six years. This act, a testament to the perseverance of the abolitionists, legally freed approximately 700,000 people in the West Indies, 20,000 in Mauritius, and 40,000 in South Africa.
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In the United States, the issue of slavery sparked a bloody civil war. The government's defeat of the Confederate States of America, a coalition of rebelling slave states that sought to secede, was a crucial moment in preserving the nation and dismantling slavery. The states that had seceded, fought to preserve the institution of slavery.
The gradual abolition of slavery was a complex process. The gradual approach emancipated newborns since the late 18th century, Slavery was only abolished in New York in 1827, and in Connecticut in 1848, demonstrating the evolving nature of the struggle and the incremental progress toward full freedom.
The 13th Amendment, passed by Congress on January 31, 1865, and ratified on December 6, 1865, marked a pivotal moment in American history by abolishing slavery in the United States. Abolition was furthered by congressional action during the Civil War, as seen by the abolition of slavery in the District of Columbia on April 16, 1862, and in the territories on June 19, 1862.
Pennsylvania's gradual abolition of slavery in 1780 stands as an early example. This decision, while crucial, initially prohibited only the future import of slaves, and the children of enslaved mothers. Those who were enslaved before that year continued to live under the bondage.
On December 18, 1865, the 13th Amendment was incorporated into the United States Constitution. This amendment officially abolished slavery and immediately freed more than 100,000 enslaved people from Kentucky to Delaware. On August 28, 1833, a significant act received royal assent, marking the Slavery Abolition Law's enactment after years of campaigning, hardship, and injustice.
The abolition of slavery involved more than legislation; it was a process of ongoing efforts designed to bring an end to the slave trade. This crucial step was a crucial phase that led to the eradication of slavery.
In Puerto Rico, the Spanish Cortes approved a law on March 22, 1873, that eliminated slavery, and the centennial of this abolition was celebrated. The observance of Juneteenth, which dates back to June 19, 1865, honors the oldest nationally celebrated commemoration of the end of slavery. Slavery's conclusion happened before and after that date for some Black Americans.
William Wilberforce, along with the efforts of numerous advocates and the political events in Britain, led to the abolition of slavery in 1833 throughout the British Empire. It was the culmination of decades of debate in parliament, with 163 members of the Commons voting against abolition in 1791.
While the federal government took steps to prohibit the transatlantic slave trade in 1808, prohibit the slave trade in the District of Columbia in 1850, and outlaw slavery in the District of Columbia in 1862, the 13th Amendment to the United States Constitution made slavery unconstitutional altogether in 1865, with the exception of punishment for a crime.
The Slavery Abolition Act, as an imperial statute, liberated less than 50 enslaved Africans in British North America. However, the Act brought only partial liberation for many enslaved people in British North America, as it only emancipated children under the age of six, and others were held by their former owners for four to six years as apprentices.
The abolition of slavery happened at different times in different nations. Each step was usually the result of a separate law or action.
Key Event | Date | Location | Significance |
---|---|---|---|
Abolition of the Slave Trade Act | 1807 | British Parliament | Prohibited the buying and selling of enslaved people within the British Empire. |
Slavery Abolition Act | 1833 | British Empire | Abolished slavery throughout most of the British Empire, although with a gradual implementation period. |
Northwest Ordinance | Various Dates (before 1800s) | Newly Organized Territories (USA) | Banned slavery in the territories ceded by Virginia, laying the groundwork for a free labor system. |
13th Amendment | 1865 | United States | Officially abolished slavery in the United States. |
Abolition in Puerto Rico | 1873 | Puerto Rico | Eliminated slavery on the island. |
For more information about the abolition of slavery and related topics, please visit: Encyclopaedia Britannica.



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