Hello!
The experiment this question refers to is Pavlov's Dogs.
Ivan Pavlov was a russian physiologist who is most known for his work with classical conditioning.
Answer:
He was the President, Andrew Johnson, of the United States.
Explanation:
Andrew Johnson was the first US President to be impeached. He held the President office from 1865 to 1869.
Plan of Reconstruction:
This plan was prepared by the President Lincoln and after his assassination, Andrew Johnson wanted to execute this plan. This plan was made to add the Southern state into union in late nineteenth century on the condition if the 10 percent voter would swore an oath of allegiance to the union.
Why he was impeached:
The President Andrew Johnson was impeached due to the plan of reconstruction and impeachment trail was started when he violated the <em>Tenure of Office Pact </em>that restrict the President from dismissing appointed officials without taking permission from Congress. He dismissed the Secretary of War from the cabinet.
Most blacks do not want to go to Africa during the colonization movement because they had been born in the United States and had little in common with Africans.
As you can see Africa and United States were different if I'm not mistaken the U.S used Africans as slaves back in the day so that could probably explain a lot.
Hope this helped :)
Have a great day
Answer:
Brunelleschi
Explanation:
Brunelleschi rediscovered the principles of linear-perspective construction known to the Greeks and Romans but buried along with many other aspects of ancient civilization during the European Middle Ages.
