Date
|
Jurisdiction
|
Description
|
1900 |
Guam |
Slavery abolished February 22, 1900, by proclamation of
Richard P. Leary.
[1]
|
1901 |
Delaware |
Thirteenth Amendment ratified.
|
1902 |
Cameroon |
Gradual abolition of slavery.
[2]
|
1903 |
French Sudan |
"
Slave" no longer used as an administrative category.
|
1904 |
United Kingdom
Germany
Denmark
Spain
France
Italy
Netherlands
Portugal
Russia |
International Agreement for the suppression of the White Slave Traffic signed in
Paris. Only France, the Netherlands and Russia extend the treaty to the whole extent of their colonial empires with immediate effect, and Italy extends it to
Eritrea but not to
Italian Somaliland.
[3]
|
British East Africa |
Slavery abolished.
[4]
|
1905 |
French West Africa |
Slavery formally abolished. Though up to one million slaves gain their freedom, slavery continues to exist in practice for decades afterward.
|
1906 |
China |
Slavery abolished beginning on 31 January 1910. Adult slaves are converted into hired laborers and the minors freed upon reaching age 25.
[5]
|
Barotseland |
Slavery abolished.
[6]
|
1908 |
Ottoman Empire |
The
Young Turk Revolution eradicates the open trade of Zanj and Circassian women from
Constantinople.
[7][
better source needed]
|
Congo Free State |
Belgium annexes the
Congo Free State, ending the practice of slavery there.
|
1912 |
Siam |
Slavery abolished.
[8]
|
1915 |
British Malaya |
Slavery abolished.
[9]
|
1917 |
British Raj |
Indian indenture system abolished.
[10]
|
1917
|
Soviet Union
|
Decree Abolishing Classes and Civil Ranks
|
1918 |
United States |
Supreme Court rules in
Arver v. United States that the 13th Amendment prohibition against involuntary servitude does not apply to conscription. The government can constitutionally force people to serve in the military against their will.
|
1919 |
Tanganyika |
Slavery abolished.
[4]
|
1922 |
Morocco |
Slave trade abolished, slave holding remained legal.
[11]
|
1923 |
Afghanistan |
Slavery abolished.
[12]
|
Florida |
Convict lease abolished after the death of
Martin Tabert, who was whipped for being too ill to work.[
citation needed]
|
Hong Kong |
Slavery of
Mui tsai abolished.
|
1924 |
Iraq |
Slavery abolished.[
citation needed]
|
Anglo-Egyptian Sudan |
Slavery abolished
[13]
|
League of Nations |
Temporary Slavery Commission appointed.
|
Turkey |
Slavery abolished
[14]
|
1926 |
Nepal |
Slavery abolished.
[15]
|
League of Nations |
Convention to Suppress the Slave Trade and Slavery.
|
British Burma |
Slavery abolished.
[9]
|
United Kingdom
|
Law of Property Act 1925.
|
1927 |
Spain |
1926 Slavery Convention ratified.
|
United Kingdom
Nejd
Hejaz |
Treaty of Jeddah (1927) abolishing the slave trade.
|
1928 |
Sierra Leone |
Abolition of domestic slavery practised by local African elites.
[16] Although established as a place for freed slaves, a study found practices of domestic slavery still widespread in rural areas in the 1970s.[
citation needed]
|
Alabama |
Convict lease abolished, the last state in the Union to do so.
|
1929 |
Persia |
Slavery abolished and criminalized.
[17]
|
1930 |
League of Nations |
Forced Labour Convention.
|
1935 |
Ethiopia |
The invading Italian General
Emilio De Bono claims to have abolished slavery in the
Ethiopian Empire.
[18]
|
Nazi Germany |
Nazi Germany legalized
forced labor.
[19]
|
1936 |
Northern Nigeria |
Slavery abolished.
[20]
|
Bechuanaland |
Slavery abolished.
[21]
|
1937 |
Bahrain |
Slavery abolished.
[22]
|
1940 |
United States |
Franklin D. Roosevelt signs Circular 3591 abolishing all forms of
convict leasing.
|
1945 |
Nazi Germany |
Millions of
forced labourers and slaves are freed after the fall of the
Third Reich; see
forced labour under German rule during World War II.
|
Japanese Empire |
Millions of
forced labourers and
sex slaves are freed after the defeat of the
Japanese Empire; see
comfort women,
rōmusha,
East Asia Development Board.
|
1946 |
Occupied Germany |
Fritz Sauckel,
Nazi official responsible for procuring forced labor in occupied Europe during
World War II, is
convicted of
crimes against humanity and hanged.
[23]
|
French Sudan |
Beginning of large slave defections encouraged by the
French Fourth Republic and the
Sudanese Union – African Democratic Rally party.
|
1948 |
United Nations |
Article 4 of the
Universal Declaration of Human Rights declares slavery contrary to human rights.
[24]
|
1949 |
Kuwait |
Slavery abolished.
[22]
|