When the Europeans had arrived in their kingdom and encountered them, they were able to know and learn about them and in a way they had taken advantage of the existence of slavery, making them turn into slaves and to be set as a property for their owners.
Find more clue in that is your answer
I believe the last choice is correct
Answer:
poison gases
warplanes
tanks
Explanation:
the gases would dissolve their insides they would cough so much their lungs would break down from the gas poison.
warplanes would drop bombs to kill the allis or axis groups.
tanks would shoot things for a farther distances to kill the people.
