26. of all the kinds of life exchanged when the old and new worlds met, which of the following had the greatest impact?
(points : 3)
domesticated animals
new crops
religion
germs and disease

question 27.27. what is a free trade area?
(points : 3)
a group of countries that share similar political and economic beliefs
a group of countries that have agreed to eliminate tariffs and trade barriers
a group of countries that believe their borders should be open and free
a group of countries that produce the same goods and services