What came first, the Ice Age or the Columbia lava flows?

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.

How did the united states obtained the purchase of floridia to extand its frontiers to the pacific ocean

The antiwar protests of the late-1960s contributed to which of these? the election of lyndon johnson passage of the voting rights act passage of the 26th amendment the geneva accords