Answer:
A
Explanation:
He used pea plants due to their ability to reproduce sexually and their easily observable traits.
<span>The answer is U.S. teetering on isolationism and only being involved in world affairs if it directly affects the U.S
In 1800's U.S. practiced isolationism under that policy never involved in world affairs and only took any action if anything directly affected U.S. U.S wanted to keep the chances of war as low as possible as it was developing as a nation at that time.The non interventionist America, devoted to solving its own problems and developing its own civilization.</span>
Thomas Jefferson, i believe.
