Answer:
Piaget; conservation
Explanation:
Conservation: In psychology, the term "conservation" is described as a person's "logical thinking" capability that allows him or her to demonstrate that a specific quantity would remain same or similar irrespective of the adjustment related to the size, container, or shape.
The concept of conservation was first introduced by a psychologist named Jean Piaget in his theory of cognitive development.
In the question above, the given statement signifies Piaget's concept of conservation.
Otto von Bismarck led Germany to unification.
i think Hunger or famine would be a good topic
At the beginning of the great war, many people were actually enthusiastic about the war (and at least supported it), which was fuelled by nationalism ( and the desire to prove themselves better than other nations) and perhaps hopes for territory gain; at the time it was not known that the Great War would come with such a great loss of life.
Maybe try to give them both treats to make them happier and your chihuahua has to at some point get along with your kitten. Try to get them to be alone maybe or let them get used to eachother.