A nations power based on wealth is called is usually referred to as GDP, or "Gross Domestic Product" (if I'm understanding the question correctly. Although this isn't always a great indicator of the fundamental "health" of the country.<span />
The United States's recession was for only seven months and eventually lead to the Great Depression in 1929. On the other hand, Germany was much harder due to their debts that are needed to be paid and that was because of the Treaty of Versailles that obliged the Germany to pay the Allied Powers its debt.
The correct answer is C. John Locke<span>.
John Locke wrote a famous book, called Two Treatises of Government, in which he explains his philosophies on how governments should be structured. In this book, he discusses several different ideas such as the concept of natural rights, the ability of citizens to overthrow a tyrannical government, and how the source of government power lies in its citizens. All three of these ideas are implemented into the US Declaration of Independence which was written by Thomas Jefferson.</span><span />