The answer is object permanence.
Object permanence refers to the ability to understand that an object is still present and physically exists even if it is hidden out of sight. In this example, your niece lacks object permanence since she does not understand that you are behind the blanket even though you cover yourself with it or you are temporarily.
Answer:
Paying higher sometimes cause a dip in supply because they raise the cost of production.
Explanation:
Once the wages are raised, the capital that could have been used to obtain supplies now goes to the wages.
The supply sector dips thereby leading to low production and at last low returns.
Foe instance if wages of workers in a sugar factory are raise, then the supply shall decrease due to the extra capital that shall be spent on the wages.
Since it was from Alexander the Great and One of the Emperor was ruled by Herculus the god of War
This really depends what your topic is about, so I can’t help you, since there is so many things that happened between 1822 and 1914 :/