Which of the following 19th century figures is known for opening japan to u. s trade?

Which statement does not accurately describe the columbian exchange and its consequences? a. wheat became a major crop in north america where it had never existed before. b. millions of africans were kidnapped into slavery to provide labor for profitable crops. c. cattle, sheep, chickens, and pigs were brought to europe for the first time. d. spanish conquistadors brought diseases with them and native peoples begin dying.

The information box says that the han added 4,000 miles of wall. refer to the mileage scale. how can this be true?

Which war in history claimed the most lives