The answer is A) He developed new methods of steel production.
B. France stopped all trade with the United States
The answer is b)to train ministers
Answer:
European colonizers killed so many indigenous Americans that the planet cooled down, a group of researchers concluded. Following Christopher Columbus' arrival in North America in 1492, violence and disease killed 90% of the indigenous population — nearly 55 million people — according to a study published this year.
Explanation:
