èr cì shì jiè dà zhàn qī jiān měi guó yán zhì chū hé zǐ dàn tóu，
bìng zài 1945
nián tóu xiàng rì běn pò shǐ rì běn tóu jiàng。
zài zhàn zhēng shèng lì hòu，
yǐ yīng guó wéi shǒu de '
ōu zhōu guó jiā，
yuán qì jìn yī bù dà shāng。
měi guó jìn guǎn zài '
èr cì dà zhàn zhōng fù chū chén zhòng dài jià，
yóu yú měi guó běn tǔ wèi céng zāo zhàn huǒ bō jí，
sǔn shī què shì zhàn shèng guó zhōng xiāng duì dì xiǎo。
měi guó jiè zhù qí jīng jì hé jūn shì lì liàng，
chéng wéi shì jiè tóu hào dà guó，
yǔ sū lián píng qǐ píng zuò，
bìng yǐn fā liǎo lěng zhàn。
měi guó dài biǎo de shì zī běn zhù yì hé zì yóu mín zhù zhì，
ér sū lián zé dài biǎo gòng chǎn zhù yì hé jìhuà jīng jì，
sū lián de jué qǐ hé yì shí xíng tài de chā yì，
yǔ měi guó de yī tào gé gé bù rù，
shuāng fāng chōng tū zào chéng liǎo 1940
nián dài mò qī kāi shǐ de lěng zhàn。
zì 1945
nián qǐ，
měi guó hé sū lián zài xǔ duō dì qū hé guó jiā，
jìn xíng yī lián chuàn dài lǐ rén zhàn zhēng，
zuì xiān yòu dōng dé hé xī dé de fēn liè，
hòu lái bāo kuò liǎo cháo xiān zhàn zhēng，
yǐ zhì liù shí nián dài chū chù fā hé dà zhàn wēi jī de gǔ bā dǎo dàn wēi jī。
lěng zhàn qī jiān，
sū lián dà lì fā zhǎn tài kōng kē jì，
pài chū liǎo quán qiú shǒu gè tài kōng rén jiā jiā lín shàng tài kōng。
měi guó jǐng jué dào yǔ sū lián de tài kōng jìng sài shàng de luò hòu，
měi guó zhèng fǔ kāi shǐ dà lì péi yǎng shù xué hé kē xué rén cái，
zài měi guó guó jiā háng kōng háng tiān jú de nǔ lì xià，
yú 1969
nián dì yī cì chéng gōng pài rén dēng shàng yuè qiú。
Following World War II, the United States emerged as one of the two dominant superpowers. The U.S. Senate, on December 4, 1945, approved U.S. participation in the United Nations (UN), which marked a turn away from the traditional isolationism of the U.S. and toward more international involvement. The post-war era in the United States was defined internationally by the beginning of the Cold War, in which the United States and the Soviet Union attempted to expand their influence at the expense of the other, checked by each side's massive nuclear arsenal and the doctrine of mutual assured destruction. The result was a series of conflicts during this period including the Korean War and the tense nuclear showdown of the Cuban Missile Crisis. Within the United States, the Cold War prompted concerns about Communist influence, and also resulted in government efforts to focus mathematics and science toward efforts such as the space race.
In the decades after World War II, the United States became a global influence in economic, political, military, cultural, and technological affairs. Beginning in the 1950s, middle-class culture had a growing obsession with consumer goods.
John F. Kennedy was elected President in 1960. Known for his charisma, he is so far the only Roman Catholic to be President. The Kennedys brought a new life and vigor to the atmosphere of the White House. During his time in office, the Cold War reached its height with the Cuban Missile Crisis in 1962. He was assassinated in Dallas, Texas, on November 22, 1963 by Lee Harvey Oswald.