When they discovered teleportation.
They don't - everybody needs transportation.
to officially abolish slavery
The abstract noun of "abolish" is "abolition" which refers to the act of officially ending or abolishing something, typically a law, system, or practice.
Mauritania officially banned slavery in 1982.
Haiti was the first country in the Americas to officially abolish slavery. The abolition followed the successful slave revolt that began in 1791, leading to Haiti's declaration of independence from France in 1804. This made Haiti the first nation in the Americas to establish freedom for enslaved people and to abolish slavery entirely.
The 18th amendment abolished the manufacture, sale and transportation of alcohol.
Haiti was the first country in the Americas to officially abolish slavery. Following a successful slave revolt, it declared independence from France in 1804 and abolished slavery completely. This landmark event made Haiti the first nation in the world to eliminate slavery.
Abolish slavery means to officially end the practice of owning and exploiting people as property. This includes prohibiting any form of forced labor or servitude and ensuring that all individuals have the right to freedom and autonomy.
Brazil was the last country in Latin America to abolish slavery. Slavery was officially abolished in Brazil on May 13, 1888, through the Lei Áurea (Golden Law) decree.
Congress can refuse his request
Slavery was officially abolished from the US on Dec 6, 1865, with the passing of the 13th Amendment.
Haiti - did on apex