What did Europeans bring?

What did Amerindians give?

Disease killed off more than 50% of Amerindians because...

What changed on the Great Plains?

How did the potato lead to a massive population explosion in Europe that fueled colonization of the New World?

How did maize cause a population explosion Africa that contributed to the Slave Trade?

What are some of the foods brought over from the America to Europe, Asia, and Africa?

What are some of the foods brought from Europe, Africa, and Asia to America?

What are the diseases that were tranferred over from the Old World to America?

What are the livestock that were brought over from the Old World?

What are the grains that were brought over from the Old World?