Almost all humans to a certain extent are dissatisfied with the limited availability of resources, but if you're speaking from an academic point of view, it would be Economists, since they study choices made from this limited availability.
The Constitution of the United States provides for l<span>imited government by ensuring there is a "balance of powers" and "checks and balances" between the three main branches of government, which ensures that no single branch can become too powerful and subsequently tyrannical. </span>
Spain is the area that was added to Napoleon's Empire.
He obtained the area through the Peninsular War.