Slavery has never been made illegal on an international level. However, Britain made slave trading in the British Empire illegal on March 25, 1807, and the United States made the international trade of slaves illegal on January 1, 1808.
Slavery was completely abolished in 1833 (in the BritishEmpire), yet it apparantly wasn't necessary to abolish in homes. Until the 6th April 2010, however, which is when all slavery was banned in the UK, on pain of up to 14 years in prison.
1652
It became illegal to sell a freed African American back into slavery
The transatlantic slave trade was abolished in the 19th century, with most countries passing laws to prohibit the trade by the mid-1800s. For example, the United States officially outlawed the importation of slaves in 1808. However, it's important to note that despite the laws, illegal slave trading continued in some regions for many years thereafter.
Abraham Lincoln did not end slavery, per Se. The 13th Amendment abolished slavery. In 1863. President Lincoln wrote and issued the Emancipation Proclamation, which made slavery illegal in the Southern States, which had seceded from the Union (11 in total.) The 13th Amendment was passed in December of 1864.
it became illegal in the year 1829
The trading of slaves inside the British Empire became illegal in the year 1807, but it would be decades before they would outlaw slavery completely.
1956
The international slave trade was made illegal in the United States in 1808 under the Act Prohibiting Importation of Slaves. However, domestic slavery persisted until the end of the Civil War in 1865 with the ratification of the 13th Amendment, which abolished slavery in the country.
Slavery was legal in Florida from before it even became a state in 1845. It became illegal on a national level in 1863 when Abraham Lincoln signed the Emancipation Proclamation.
1967 and made legal two years later.
Massachusetts became the first colony to legalize slavery in the year 1641. Slavery is declared illegal in the Americas' Northwest Territory, or now known as the Midwest in 1787. And Abraham Lincoln issues the Emancipation Proclamation in 1863, or in other words, he stopped slavery trade among the Americans.
1937, same year hemp was essentially made illegal (controversy)