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.
<span>a church building recognized as a great architectural achievement of Justinian's reign</span>
Both Giovanni di Arrigo and Giovanni di Nicolao Arnolfini were Italian merchants, originally from Lucca, but resident in Bruges since at least 1419. The man in this painting is the subject of a further portrait by van Eyck in the Gemäldegalerie, Berlin, leading to speculation he was a friend of the artist.
fol·li·cle
noun
1.ANATOMY
a small secretory cavity, sac, or gland.
2.BOTANY
a dry fruit that is derived from a single carpel and opens on one side only to release its seeds.