1. what was the significance of the battle of tannenberg in world war i? a. the failed russian offensive into german territory represented the ineffectiveness of the russian military. b. the attack on civilians by german war boats during the battle led to the united states entering the war. c. the incoming british military forces amply supplied the allied lines to prevent germany from invading paris. d. the defeat of british forces shifted the allied war focus to defeating the ottoman empire. 2. what was the impact of the battle of dien bien phu? a. french defeat in vietnam led to the united states as the sole support for the democratic republic of vietnam. b. the khmer rouge's victory at the battle would lead to the rise of pol pot and the cambodian genocide. c. the us loss at the battle would eventually lead to the capture of saigon by vietnamese forces. d. the stalemate at the battle led to the creation of the demarcation line that split north and south korea. 3. which names an ecological transfer of plants, animals, people, and diseases between the old and new worlds? a. great american interchange b. columbian exchange c. pan-american exposition d. central american seaway 4. what effect did the launching of sputnik have on american society? a. it convinced americans that their government could protect them. b. it led the government to take a less involved role in the economy. c. it ultimately led to a growth in the size and scope of government. d. it created a sense of national pride in american technology. 5. read the paragraph. following the second world war (1939–1945), the united states worked to rebuild the nations of europe. the marshall plan offered more than $12 billion in aid. by 1952, industrial production and living standards in much of europe had again risen to prewar standards. which most accurately explains why to rebuild post-war europe was in the interest of the united states? a. the united states felt responsible for starting the second world war. b. nations who were dependent on this post-war aid eventually became part of the united states. c. a strong economy in europe would provide stability to thwart the growth of communism. d. humanitarian causes have always been important to united states citizens.