Answer:
The correct answer is B) Maize
Explanation:
Between both continents, there was an important exchange of food products. From America to Europe, corn was the most important product, demonstrated its ability to feed dense populations and was quickly accepted by Europeans, becoming one of the most widespread and popular crops in Europe.
Rice and coffee were brought by Europeans to America
If you meant Denton Cooley, he was the first person to implant an artificial heart in 1969.
They got to know with the photographs from the U - 2 spy plane.
<em>Hope this helped! :)</em>
C- checks and balances was made so that no one branch could have too much power
