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.
The U.S. Constitution addresses which of the following issues? Select all that apply.
presidential elections
extradition of a criminal back to a state for trial
making laws
90 is going to be your answer
Answer: Penetration of Africa
Explanation:
The Portuguese were able to establish the trading along the coast by taking helping the local tribal chiefs. The traders established the venture of gold and silver. The missionaries then followed the traders and then this pattern spread along the entire west coast.
The above were the stages of Portuguese exploration and African penetration.