By the consent of the people over whom they rule.
The "social contract" refers to an implicit agreement between a government and the citizens of the society overseen by that government. Philosophers of the Enlightenment era were famous for arguing the idea of a "social contract." According to this view, a government's power to govern comes from the consent of the people themselves -- those who are to be governed. This was a change from the previous ideas of "divine right monarchy" -- that a king ruled because God appointed him to be the ruler. One of the most influential of the social contract theorists was John Locke, who repudiated the views of divine right monarchy in his <em>First Treatise on Civil Government.</em> In his <em>Second Treatise on Civil Government</em>, Locke then argued for the rights of the people to create their own governments according to their own desires and for the sake of protecting and enhancing their own life, liberty, and property.
The dynasties created gunpowder, porcelain, and paper currency which would benefit the economy. Politically, people were able to move around the empires, many cities gained a higher population, thus leading to a social advancement.
Hoover did not handle the Bonus Army well.
The Bonus Army was a group of 43 thousand protestors - WWI veterans and their families - who gathered in Washington DC to demand payment for their service certificates.
President Hoover did not attempt to negotiate with the protestors, first, he ordered to have them removed from government’s property and later he ordered to the Army to clear the marcher’s campsite.
To do so, infantry and cavalry was used and additionally, six tanks.
Public opinion on Hoover’s actions was strong, newspapers and newsreels - that were popular at the time - showed images of the violence perpetrated on soldiers and their families. This was considered one of the strongest factors that influenced his lost at elections to Roosevelt.
He established a policy of discipline, bassically he said if you don’t work, you do not get to eat.
The Indian Removal Act took place in the first half of the 1800s under the presidencies of Andrew Jackson and Martin van Buren and directly led to the Trail of Tears, which resulted in the death of many members of tribes in the American South. It was considered controversial because the Supreme Court ruled in favor of the tribes' cause wherein the state of Georgia (which was actively seeking to evict the Indian inhabitants) was told it had no right to force their removal. Nevertheless, the president ordered their removal.
hope this helps! :)