The correct answer is D. The achievement of Manifest Destiny and the need for a "New American Frontier". The Manifest Destiny was an american philosphy from the 19th century that stated it was America's right, given by God, to expand and conquer other territories. In this period, imperialism was increasing at a global level and United States didn't want to be left behind of this imperalist race. The idea of the <em>New american frontier</em> was to expand the settled area as the first americans had started to do when they got to the new continet. The frontier had actually been changed by events like the Louisiana purchase but there was always a new frontier they wanted to reach.
Answer: Supply and demand.
Explanation: The technical term is command Economy
<em>The 1919 League of Nations was the first diplomatic organization which had as main goal to maintain peace, promote international cooperation and prevent another world war from happening</em>, it was created after Word War I and failed it's purpose and dissolved with World War II.
The League of Nations failed mostly because <em>of the absence of powerful nations such as United State</em>,<u> it was dominated by England and France which were imperialist nations that wanted to spread their empire</u> and some nations like <em>Germany and the Soviet Union were not allowed to join</em>. Another cause of its failure was<em> its structure, it required unanimous votes for taking actions</em>, which made very difficult to achieve goals and<em> when countries attacked each other the League of Nations couldn't do anything about it because it lacked it's own army</em>.<em> The League of Nations had to uphold the Treaty of Versailles</em> which placed Germany as the country who lost the World War I, which made the League of Nations seem not neutral, and Germans didn't respect it.
The League of Nations was dissolved and replaced with the United Nations after World War II.
The correct answer is: 3 trillion dollars
