British abuses in the Americas caused the young US to want to have a list of prohibited acts that the new government could not carry out against it's citizens. For example, the British army could be marching somewhere in the colonies and at nightfall, they could occupy your house to sleep, eat your food and there wasn't anything you could do about it.
It occurred because it was cheaper and businesses could retain more money and underpay their workers. The practical reasons are that children are faster, they can fit into smaller spaces and are more controlled.
The Nutella Jar is so designed that the chocolate-colored Nutella inside the jar is clearly visible from the outside and proves to be reason enough to tempt the buyer to buy it.
The picture showed on the jar makes the buyer imagine of the combinations of dishes he can make if the buys Nutella.
Thus, it is clear that the packaging of the Nutella Jar governs the decision of buying it to great extent.