Answer:
Artificial intelligence such as Robots
Explanation:
In 18th century, slavery was at peak value since there was high need of labour.
In 20th century, scientists have created robots which has replaced slaves hence slavery decayed.
George Childress
Hope this helps!
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~Courtney
3 is your answer. hope that helps
Answer: Soviet Union
Union of Soviet Socialist Republics
1. USSR - a former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia and others); officially dissolved 31 December 1991. Russia, Soviet Union, Union of Soviet Socialist Republics.
A is the correct answer bro