Explanation:
A textbook because they write the stuff based on other information.
A. Americans found that they could survive a war with a European power.
<span>When the child thinks that after arranging two rows of pennies and then s/he conclude that it is longer than the top row, the child is in preoperational Piaget's stage. This stage also demonstrate that the cognitive development is defined by its egocentric thought, the ability of a person to see things in a different perspective.</span>
